{"cik":1519632,"entityName":"LRR Energy, L.P.","facts":{"dei":{"EntityCommonStockSharesOutstanding":{"label":"Entity Common Stock, Shares Outstanding","description":"Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.","units":{"shares":[{"end":"2014-03-07","val":0,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2014Q1I"},{"end":"2014-05-02","val":0,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"}]}},"EntityPublicFloat":{"label":"Entity Public Float","description":"The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.","units":{"USD":[{"end":"2011-06-30","val":0,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27","frame":"CY2011Q2I"},{"end":"2012-06-29","val":156852000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13","frame":"CY2012Q2I"},{"end":"2013-06-28","val":256216070,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013Q2I"},{"end":"2014-06-30","val":327278161,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q2I"}]}}},"us-gaap":{"AccountsAndOtherReceivablesNetCurrent":{"label":"Accounts and Other Receivables, Net, Current","description":"Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.","units":{"USD":[{"end":"2011-12-31","val":1123000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2011-12-31","val":1123000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":1123000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":1123000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2012-12-31","val":1000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012Q4I"},{"end":"2012-12-31","val":1000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"}]}},"AccountsPayableCurrent":{"label":"Accounts Payable, Current","description":"Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2010-12-31","val":3354000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":7257000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":2707000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2012-03-31","val":1005000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"}]}},"AccountsReceivableNetCurrent":{"label":"Accounts Receivable, after Allowance for Credit Loss, Current","description":"Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.","units":{"USD":[{"end":"2010-12-31","val":16543000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":16524000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":12924000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":12924000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":12924000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2011Q4I"},{"end":"2012-03-31","val":8947000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":8452000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":8033000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":7250000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":7250000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":7250000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":7250000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":7687000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":9818000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":10567000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":9867000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":9867000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":9867000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":9867000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":9867000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":10863000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":9792000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":9269000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":11124000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":11124000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":11124000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":9450000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":8659000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"AccretionExpense":{"label":"Accretion Expense","description":"Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":1012000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":343000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":1112000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":368000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":175000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":168000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":343000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"}]}},"AccretionOfDiscount":{"label":"Accretion of Discount (Deprecated 2016-01-31)","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of passage of time.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":39101000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":39101000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":43579000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":43579000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":38790000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":38790000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":39313000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"AccruedLiabilitiesCurrent":{"label":"Accrued Liabilities, Current","description":"Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2010-12-31","val":8141000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":6984000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":2739000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":2739000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":2746000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":2746000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":2746000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":2746000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":2746000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":3909000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":3910000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":3102000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1415000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1415000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":1415000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":1415000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":1415000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":1415000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":3892000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":4002000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":5039000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":2300000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":2300000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":2300000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":2300000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":2300000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":5098000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":4797000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":4094000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":5506000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":5506000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":5506000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":3613000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":9910000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"AmortizationOfDeferredHedgeGains":{"label":"Amortization of Deferred Hedge Gains","description":"The amount of expense charged against earnings by an Entity to record deferred gains and losses on hedge instruments. Examples include gain on economic hedges, amortization of gain on designated fair value hedge and so forth.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":1000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":7000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":20000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":20000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":247000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":247000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":508000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":508000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":746000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":746000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":1002000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":1002000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":157000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":157000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":330000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":330000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":510000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":692000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":114000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":243000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"AmortizationOfFinancingCosts":{"label":"Amortization of Debt Issuance Costs","description":"Amount of amortization expense attributable to debt issuance costs.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":93000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":59000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":50000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":50000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":50000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":50000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":50000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":74000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":74000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":160000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":159000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":270000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":262000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":388000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":387000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":367000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":367000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":82000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":81000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":187000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":187000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":290000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":290000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":394000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":394000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":102000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":102000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":208000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":208000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":313000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":485000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":170000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":341000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"AssetManagementCosts":{"label":"Asset Management Costs (Deprecated 2018-01-31)","description":"The aggregate costs related to asset management during the reporting period.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":5337000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":1534000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":4546000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":1579000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"}]}},"AssetRetirementObligation":{"label":"Asset Retirement Obligation","description":"The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.","units":{"USD":[{"end":"2011-11-15","val":23681000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-11-15","val":25809000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":24154000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":24154000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":24154000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":26353000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":26353000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2011Q4I"},{"end":"2012-06-30","val":24794000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":25233000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":32048000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":33115000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":34091000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":34091000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":34091000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":34091000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2012-12-31","val":34091000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-03-31","val":33655000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":35163000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":35581000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":36326000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":36326000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":36326000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":36326000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":36326000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":36872000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":37436000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":37989000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":41604000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":41604000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":41604000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":42132000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":42711000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"AssetRetirementObligationAccretionExpense":{"label":"Asset Retirement Obligation, Accretion Expense","description":"Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":175000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":191000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":191000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":373000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":717000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":774000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":361000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":390000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":1086000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":1171000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":369000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":397000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":1460000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":1575000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":1575000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":1575000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":457000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":470000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":947000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":947000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":477000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":477000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":1433000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":1433000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":486000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":486000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":1924000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":1924000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":503000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":503000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":1013000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":1013000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":510000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":510000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":1532000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":519000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":2071000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":511000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":1029000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":518000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"AssetRetirementObligationCurrent":{"label":"Asset Retirement Obligation, Current","description":"Current portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.","units":{"USD":[{"end":"2010-12-31","val":792000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":333000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":359000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":359000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":359000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":359000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":359000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":359000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":359000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":365000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":371000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":376000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":500000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":500000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":500000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":500000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":500000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":500000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":423000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":387000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":333000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":488000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":488000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":488000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":488000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":488000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":495000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":503000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":510000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1065000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":1065000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":1065000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1079000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":2153000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"AssetRetirementObligationLiabilitiesIncurred":{"label":"Asset Retirement Obligation, Liabilities Incurred","description":"Amount of asset retirement obligations incurred during the period.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":298000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":353000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-06-30","val":166000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":257000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":257000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":364000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":364000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":167000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":313000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-09-30","val":417000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":476000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":476000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":128000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":181000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-09-30","val":235000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":440000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-06-30","val":106000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"AssetRetirementObligationLiabilitiesSettled":{"label":"Asset Retirement Obligation, Liabilities Settled","description":"Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":112000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":131000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":180000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":492000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":492000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":84000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":188000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-09-30","val":360000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":362000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":362000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-09-30","val":19000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":130000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":2000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":46000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"AssetRetirementObligationRevisionOfEstimate":{"label":"Asset Retirement Obligation, Revision of Estimate","description":"Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":2993000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":84000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":-298000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":-298000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2012-01-01","end":"2012-03-31","val":-141000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-131000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":-133000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":6357000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":6291000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":6291000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":197000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":197000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-85000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-84000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-09-30","val":-85000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":2290000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":5000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":5000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"AssetRetirementObligationsNoncurrent":{"label":"Asset Retirement Obligations, Noncurrent","description":"Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.","units":{"USD":[{"end":"2010-12-31","val":23504000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":25159000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":22780000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":22780000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":23795000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":23795000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":23795000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":23795000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":25994000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":22976000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":24423000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":24857000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":31548000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":32615000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":33591000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":33591000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":33591000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":33591000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":33232000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":34776000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":35248000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":35838000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":35838000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":35838000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":35838000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":35838000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":36377000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":36933000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":37479000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":40539000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":40539000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":40539000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":41053000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":40558000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"Assets":{"label":"Assets","description":"Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.","units":{"USD":[{"end":"2010-12-31","val":504622000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":507855000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":458066000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":458066000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":579934000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":459920000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":528221000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":512127000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":502486000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":528226000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":561236000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":570758000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":563174000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":490418000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":481045000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":498733000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":558954000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":558954000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":558954000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":524788000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":502863000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"AssetsCurrent":{"label":"Assets, Current","description":"Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.","units":{"USD":[{"end":"2010-12-31","val":54598000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":45926000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":31079000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":35478000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":36858000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":32780000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":26864000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":27599000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":27949000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":27949000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":27949000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":27949000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":64757000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":33406000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":30774000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":25613000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":25613000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":25613000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":25613000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":25613000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":29557000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":28139000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":43146000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":68161000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":68161000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":68161000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":63581000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":51123000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"BusinessAcquisitionsProFormaNetIncomeLoss":{"label":"Business Acquisition, Pro Forma Net Income (Loss)","description":"The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":-43438000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":3997000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-2052000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-6049000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-12-31","val":56629000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"BusinessAcquisitionsProFormaRevenue":{"label":"Business Acquisition, Pro Forma Revenue","description":"The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":124810000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":28343000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":48113000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":19770000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-12-31","val":194946000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"CapitalExpendituresIncurredButNotYetPaid":{"label":"Capital Expenditures Incurred but Not yet Paid","description":"Future cash outflow to pay for purchases of fixed assets that have occurred.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":165000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":1531000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":-1421000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":-1421000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":-1421000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":-1421000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":-1421000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":-2590000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":-2590000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":5303000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":5303000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":960000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-960000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":940000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":940000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":940000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":940000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":3885000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":3885000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":4662000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":4662000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":2892000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":2892000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":1663000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":1663000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":3797000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":1735000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-09-30","val":2125000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":6483000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"CashAndCashEquivalentsAtCarryingValue":{"label":"Cash and Cash Equivalents, at Carrying Value","description":"Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.","units":{"USD":[{"end":"2009-12-31","val":15527000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2009Q4I"},{"end":"2010-09-30","val":17663000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3I"},{"end":"2010-12-31","val":12455000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":5716000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2011-12-31","val":1513000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2011Q4I"},{"end":"2012-03-31","val":6803000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2012-03-31","val":6803000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-03-31","val":1513000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q1I"},{"end":"2012-06-30","val":4656000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2012-06-30","val":4656000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2I"},{"end":"2012-09-30","val":6301000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2012-09-30","val":6301000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3I"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2012-12-31","val":3467000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-03-31","val":43209000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2013-03-31","val":43209000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-03-31","val":3467000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q1I"},{"end":"2013-06-30","val":4892000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2013-06-30","val":4892000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2I"},{"end":"2013-09-30","val":5301000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2013-09-30","val":5301000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3I"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2013-12-31","val":4417000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":5158000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2014-03-31","val":4417000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-03-31","val":5158000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1I"},{"end":"2014-06-30","val":2871000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2014-06-30","val":2871000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2I"},{"end":"2014-09-30","val":10751000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":3576000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":3576000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":3576000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":2740000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":7681000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"CostsAndExpensesRelatedParty":{"label":"Costs and Expenses, Related Party","description":"Costs of sales and operating expenses for the period incurred from transactions with related parties.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":29718000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":63186000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":86473000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":86473000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":86473000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":15483000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":42083000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-09-30","val":67597000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":100143000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":100143000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":23994000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":51549000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-09-30","val":76677000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":108243000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":47083000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":90859000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves":{"label":"Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves","description":"Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":56000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":56000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":56000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":933000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":9795000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":9795000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":9795000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":10000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":10000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":38330000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"CostsIncurredDevelopmentCosts":{"label":"Costs Incurred, Development Costs","description":"Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":2461000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":2461000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":2461000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":29713000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":31598000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":31598000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":31598000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":36484000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":36484000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":41721000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities":{"label":"Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities","description":"Amount of costs incurred related to oil and gas property acquisition, exploration and development activities, including capitalized costs and costs charged to expense.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":2517000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":41393000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":41393000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":36494000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":36494000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":80051000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"CurrentFederalTaxExpenseBenefit":{"label":"Current Federal Tax Expense (Benefit)","description":"Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":0,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"DebtWeightedAverageInterestRate":{"label":"Debt, Weighted Average Interest Rate","description":"Weighted average interest rate of debt outstanding.","units":{"pure":[{"end":"2012-12-31","val":0.0347,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":0.0347,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":0.0347,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":0.0347,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":0.0344,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2013-03-31","val":0.0388,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1I"},{"end":"2013-06-30","val":0.0362,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":0.036,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":0.0388,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":0.0388,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":0.0388,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":0.0388,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":0.0418,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":0.0421,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":0.0418,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":0.0381,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":0.0381,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":0.0381,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":0.046,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":0.0527,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"DeferredFinanceCostsNoncurrentNet":{"label":"Debt Issuance Costs, Noncurrent, Net","description":"Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.","units":{"USD":[{"end":"2010-12-31","val":311000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":252000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":1365000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":1291000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":1739000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1664000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1559000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1559000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":1559000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":1559000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":1559000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":1559000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":1454000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1349000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":1245000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1154000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":1154000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":1154000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":1154000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":1154000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1066000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1039000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1100000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":2295000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":2295000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":2295000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":2295000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":2076000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"DeferredTaxLiabilitiesNoncurrent":{"label":"Deferred Tax Liabilities, Net, Noncurrent","description":"Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent.","units":{"USD":[{"end":"2010-12-31","val":145000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":64000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":35000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":35000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":35000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":35000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":35000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":35000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":35000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":140000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":140000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":141000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":120000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":120000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":120000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":120000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":120000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":120000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":100000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":114000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":114000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":44000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":44000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":44000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":44000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":44000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":75000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":83000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":88000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":99000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":99000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":99000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":99000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"}]}},"DepreciationDepletionAndAmortization":{"label":"Depreciation, Depletion and Amortization","description":"The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":45686000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":16102000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":32034000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":11163000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":3923000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":5061000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":5061000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":5876000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":5876000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":7011000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":9983000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":19859000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":22627000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":10559000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":12011000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":28126000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":32152000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":8267000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":9525000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":41583000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":46928000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":46928000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":46928000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":9416000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":10110000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":20239000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":20239000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":10129000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":10129000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":29772000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":29772000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":9533000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":9533000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":43420000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":43420000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":8465000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":8465000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":17145000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":17145000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":8680000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":8680000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":25856000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":8711000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":36729000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":8880000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":17574000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":8694000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"DerivativeCostOfHedgeNetOfCashReceived":{"label":"Derivative, Cost of Hedge Net of Cash Received","description":"The premium (cost) of a hedge, net of any cash received on settlement during the period.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":-59000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":-59000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":-59000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-59000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":-59000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-59000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-59000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-59000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"}]}},"DerivativeInstrumentsAndHedges":{"label":"Derivative Instruments and Hedges, Assets","description":"Carrying amount as of the balance sheet date of the asset arising from derivative instruments and hedging activities, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":23819000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":22448000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":16064000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10","frame":"CY2011Q4I"},{"end":"2011-12-31","val":16064000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":16064000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2012-03-31","val":18151000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"}]}},"DerivativeInstrumentsAndHedgesNoncurrent":{"label":"Derivative Instruments and Hedges, Noncurrent","description":"Carrying amount as of the balance sheet date of the assets arising from derivative contracts and hedging activities, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":7767000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":30327000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":27015000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10","frame":"CY2011Q4I"},{"end":"2011-12-31","val":27015000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":27015000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2012-03-31","val":25957000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"}]}},"DerivativeLiabilitiesCurrent":{"label":"Derivative Liability, Current","description":"Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.","units":{"USD":[{"end":"2010-12-31","val":1888000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":1109000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":186000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10","frame":"CY2011Q4I"},{"end":"2011-12-31","val":186000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":186000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2012-03-31","val":890000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"}]}},"DerivativeLiabilitiesNoncurrent":{"label":"Derivative Liability, Noncurrent","description":"Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.","units":{"USD":[{"end":"2010-12-31","val":5333000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":1157000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2012-03-31","val":314000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, 10 Percent Annual Discount for Estimated Timing of Cash Flows (Deprecated 2014-01-31)","description":"This is the amount that is derived from using a discount rate of ten percent a year to reflect the timing of the future net cash flows relating to proved oil and gas reserves.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":472248000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":435174000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":435174000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":416322000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":358020000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":358020000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":409401000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Cash Inflows (Deprecated 2014-01-31)","description":"Amount of estimated future cash inflows from sale of proved oil and gas reserves.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":1573150000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":1420166000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":1420166000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":1488912000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":1267735000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":1267735000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":1450007000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Development Costs (Deprecated 2013-01-31)","description":"The future cost of developing oil and gas from proved reserves located in this geographic region.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":151487000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":151487000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":149274000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":149274000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureDevelopmentCosts1":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Development Costs (Deprecated 2014-01-31)","description":"Amount of estimated future cost to be incurred in developing proved oil and gas reserves.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":-156909000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-163316000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-120339000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense1":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Income Tax Expense (Deprecated 2014-01-31)","description":"Amount of estimated future income tax expense to be incurred based on the future income less future expense derived from production and sale of proved oil and gas reserves.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":-1187000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Net Cash Flows (Deprecated 2014-01-31)","description":"Amount of estimated net future cash inflows, after subtracting future development and production costs and future income tax expenses, from sale of proved oil and gas reserves.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":908037000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":826188000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":826188000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":804218000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":683261000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":683261000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":801958000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Production Costs (Deprecated 2013-01-31)","description":"The future cost of producing oil and gas from proved reserves located in this geographic region.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":442491000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":442491000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":435200000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":435200000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionCosts1":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Production Costs (Deprecated 2014-01-31)","description":"Amount of estimated future cost to be incurred in producing proved oil and gas reserves.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":-508204000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-521378000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-526523000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure":{"label":"Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Standardized Measure (Deprecated 2014-01-31)","description":"This amount is the future net cash flows less the computed discount.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":435789000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":391014000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":391014000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":387896000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":325241000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":325241000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":392557000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"DistributionsPerLimitedPartnershipAndGeneralPartnershipUnitOutstandingBasic":{"label":"Distributions Per Limited Partnership and General Partnership Unit, Outstanding, Basic","description":"Cash dividends declared or paid to each outstanding limited partnership and general partnership unit during the reporting period.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":0.475,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":0.475,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2013-02-13","end":"2013-02-14","val":0.48,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"}]}},"DueFromAffiliateCurrent":{"label":"Due from Affiliate, Current","description":"Amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership, due within 1 year (or 1 business cycle).","units":{"USD":[{"end":"2010-12-31","val":59000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2012-03-31","val":665000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-09-30","val":2465000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2013-03-31","val":2800000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":3469000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":2293000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2014-03-31","val":4157000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":5737000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":5760000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":5697000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":5697000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":5697000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":6351000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1456000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"DueToAffiliateCurrent":{"label":"Due to Affiliate, Current","description":"Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2011-09-30","val":196000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":536000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":536000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":536000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":536000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":536000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":536000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":536000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":583000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-12-31","val":1977000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1977000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":1977000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":1977000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":1977000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":1977000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-12-31","val":255000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":255000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":255000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":255000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":255000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"}]}},"EnergyMarketingContractLiabilitiesCurrent":{"label":"Energy Marketing Contract Liabilities, Current","description":"Current liabilities attributable to energy marketing activities (trading activities). Current energy marketing (trading activities) are when entities engage in both financial and physical trading to increase profits, manage their commodity price risk and enhance system reliability. They may trade electricity, coal, natural gas and oil. These entities typically use a variety of financial instruments, including forward contracts, options and swaps.","units":{"USD":[{"end":"2011-12-31","val":186000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":186000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":186000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":186000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":565000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1669000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1671000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1671000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":1671000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":1671000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":1671000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":1671000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":3373000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1657000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":2807000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":2217000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":2217000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":2217000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":2217000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":2217000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":2786000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":5783000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":510000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":556000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":556000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":556000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":866000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":783000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"EnergyMarketingContractLiabilitiesNoncurrent":{"label":"Energy Marketing Contract Liabilities, Noncurrent","description":"Fair value of liability arising from energy marketing activities (trading activities), expected to be settled after one year or beyond the normal operating cycle, if longer. Examples of energy marketing activities include, but are not limited to, trading of electricity, coal, natural gas and oil using financial instruments, including, but not limited to, forward contracts, options and swaps.","units":{"USD":[{"end":"2012-06-30","val":620000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1458000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":874000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":874000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":874000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":874000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":874000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":874000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":1189000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":503000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":147000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":174000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":174000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":174000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":174000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":174000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":11000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":3643000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":559000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":232000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":232000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":232000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":116000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":94000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"EnergyMarketingContractsAssetsCurrent":{"label":"Energy Marketing Contracts Assets, Current","description":"Carrying amount as of the balance sheet date of the asset arising from energy trading activities that involves the purchase and sale of energy under forward contracts at fixed and variable prices and the buying and selling of financial energy contracts that include exchange futures and options and over the counter options and swaps, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.","units":{"USD":[{"end":"2011-12-31","val":16064000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":16064000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":16064000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":16064000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":23088000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":15461000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":15399000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":16134000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":16484000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":16484000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":16484000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":16484000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":10342000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":14200000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":11635000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":9726000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":9726000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":9726000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":9726000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":9726000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":8171000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":8022000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":14508000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":45924000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":45924000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":45924000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":43368000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":32087000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"EnergyMarketingContractsAssetsNoncurrent":{"label":"Energy Marketing Contracts Assets, Noncurrent","description":"Carrying amount as of the balance sheet date of the asset arising from energy trading activities that involves the purchase and sale of energy under forward contracts at fixed and variable prices and the buying and selling of financial energy contracts that include exchange futures and options and over the counter options and swaps, which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.","units":{"USD":[{"end":"2011-12-31","val":27015000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":27015000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":27015000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":28624000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":32057000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":20155000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":18815000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":19821000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":20000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":20000000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":20000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":20000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":17377000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":21454000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":17491000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":16746000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":16746000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":16746000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":16746000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":16746000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":12563000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":5569000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":7722000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":38540000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":38540000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":38540000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":46454000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":37159000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts":{"label":"Extensions, Discoveries, Additions and Improved Recovery, Less Related Costs","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":19380000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":19380000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":19381000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":19381000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":2034000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":2034000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":17979000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows":{"label":"Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Cash Inflows","description":"Amount of estimated future accumulated cash inflow from the sale of proved oil and gas reserves.","units":{"USD":[{"end":"2012-12-31","val":1488912000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":1450007000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":1749346000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts":{"label":"Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Development Costs","description":"Amount of estimated future accumulated cash outflow for costs to be incurred in developing proved oil and gas reserves.","units":{"USD":[{"end":"2012-12-31","val":163316000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":120339000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":117473000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense":{"label":"Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Income Tax Expense","description":"Amount of estimated future accumulated cash outflow for income tax, based on the future income less future expense derived from production and sale of proved oil and gas reserves.","units":{"USD":[{"end":"2013-12-31","val":1187000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":1236000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows":{"label":"Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Net Cash Flows","description":"Amount, after future accumulated cash outflow for development and production costs and future income tax, of estimated future accumulated cash inflow from the sale of proved oil and gas reserves.","units":{"USD":[{"end":"2012-12-31","val":804218000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":801958000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":943540000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts":{"label":"Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Production Costs","description":"Amount of estimated future accumulated cash outflow for costs to be incurred in producing proved oil and gas reserves.","units":{"USD":[{"end":"2012-12-31","val":521378000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":526523000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":687097000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows":{"label":"Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Ten Percent Annual Discount for Estimated Timing of Cash Flows","description":"Amount of discount on future accumulated cash inflow, after deducting future accumulated cash outflow for development and production costs and future income tax, from sale of proved oil and gas reserves, using a discount rate of ten percent a year.","units":{"USD":[{"end":"2012-12-31","val":416322000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":409401000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":501869000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"GainLossOnInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstruments":{"label":"Gain (Loss) on Interest Rate Derivative Instruments Not Designated as Hedging Instruments","description":"Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-488000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":-164000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":-439000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":-141000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2012-01-01","end":"2012-03-31","val":-33000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-09-30","val":-4466000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-2278000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":-4650000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-4650000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":115000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":2772000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":2657000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":1371000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":1371000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":-1401000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":-1401000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":1256000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":1256000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-294000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-294000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-1422000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-1422000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-1128000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-1128000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":-930000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":492000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":-1790000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-1351000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-1673000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-322000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments":{"label":"Gain (Loss) on Price Risk Derivative Instruments Not Designated as Hedging Instruments","description":"Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of price risk derivatives not designated as hedging instruments.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":12287000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-09-30","val":7975000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-16458000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":12748000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":12748000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-6067000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":6287000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":12354000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":5000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":5000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":-6282000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":-6282000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":781000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":781000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-5622000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-5622000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-18950000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-18950000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-13328000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-13328000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":821000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":19771000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":71235000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":18682000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":9755000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-8927000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"GainLossOnSaleOfCommodityContracts":{"label":"Gain (Loss) on Sale of Commodity Contracts","description":"The difference between the book value and the sale price of agreements to purchase or sell mineral resources, energy, and agricultural products at some future point. This element refers to the gain (loss) included in earnings and not to the cash proceeds.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":35450000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":12186000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":6070000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":6029000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":4015000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":4015000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":4015000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":4015000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":5248000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-03-31","val":5248000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-06-30","val":12068000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-06-30","val":12068000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":6820000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-04-01","end":"2012-06-30","val":6820000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":17876000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":5808000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":23350000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":23350000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-03-31","val":4105000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":6248000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":2143000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2"}]}},"GeneralAndAdministrativeExpense":{"label":"General and Administrative Expense","description":"The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":4331000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":659000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":4414000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":1208000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":1662000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":1749000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":1749000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":1892000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":1892000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":2847000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":3183000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":6301000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":6745000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":3229000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":3450000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":8595000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":9325000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":2294000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":2580000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":12632000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":13758000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":13758000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":13758000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":3299000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":3429000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":6197000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":6197000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":2768000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":2768000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":8866000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":8866000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":2669000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":2669000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":11965000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":11965000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":3182000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":3182000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":5881000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":5881000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":2699000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":2699000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":8510000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":2629000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":11447000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":3791000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":16464000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":12673000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"GeneralPartnersCapitalAccount":{"label":"General Partners' Capital Account","description":"The amount of the general partner's ownership interest.","units":{"USD":[{"end":"2011-12-31","val":438000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":438000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":438000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":438000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":438000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":438000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":438000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":436000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":432000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":406000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":396000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":396000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":396000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":396000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":396000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":396000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":381000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":387000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":376000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":303000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":303000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":303000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":303000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":303000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":295000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":277000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":290000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":310000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":310000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":310000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":-1540000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":-9139000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"GeneralPartnersCapitalAccountUnitsIssued":{"label":"General Partners' Capital Account, Units Issued","description":"The number of general partner units issued.","units":{"shares":[{"end":"2011-12-31","val":22400,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":22400,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":22400,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":22400,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":22400,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":22400,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":22400,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":22400,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":22400,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":22400,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":22400,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":22400,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":22400,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":22400,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":22400,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":22400,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":22400,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":22400,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":22400,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"GeneralPartnersCapitalAccountUnitsOutstanding":{"label":"General Partners' Capital Account, Units Outstanding","description":"The number of general partner units outstanding.","units":{"shares":[{"end":"2011-12-31","val":22400,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":22400,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":22400,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":22400,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":22400,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":22400,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":22400,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":22400,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":22400,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":22400,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":22400,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":22400,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":22400,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":22400,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":22400,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":22400,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":22400,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":22400,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":22400,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":22400,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":22400,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":22400,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"HedgingAssetsNoncurrent":{"label":"Hedging Assets, Noncurrent","description":"Carrying amount as of the balance sheet date of the asset arising from a financial instrument or a contract used to hedge price changes in underlying assets, and which are expected to be converted into cash or otherwise disposed of after a year or beyond the normal operating cycle, if longer.","units":{"USD":[{"end":"2012-03-31","val":1106000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"}]}},"HedgingLiabilitiesCurrent":{"label":"Hedging Liabilities, Current","description":"Carrying amount as of the balance sheet date of the liability arising from a financial instrument or a contract used to mitigate a specified risk (hedge), and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":594000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":480000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2012-03-31","val":302000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":463000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":669000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":659000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":659000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":659000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":659000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":659000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":659000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":605000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":588000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":650000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":648000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":648000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":648000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":648000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":648000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":933000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1304000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1781000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":2327000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":2327000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":2327000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":2750000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":2781000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"HedgingLiabilitiesNoncurrent":{"label":"Hedging Liabilities, Noncurrent","description":"Fair value of liability arising from a financial instrument or contract used to mitigate a specified risk (hedge), expected to be settled after one year or beyond the normal operating cycle, if longer.","units":{"USD":[{"end":"2012-06-30","val":1584000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":3502000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":3526000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":3526000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":3526000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":3526000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":3526000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":3526000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":3291000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":473000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":1629000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1554000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":1554000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":1554000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":1554000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":1554000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1362000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1915000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":709000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":817000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":817000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":817000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1340000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":960000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"ImpairmentOfOilAndGasProperties":{"label":"Impairment of Oil and Gas Properties","description":"The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":10944000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":16765000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":16765000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2012-01-01","end":"2012-03-31","val":3093000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":3093000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":3093000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":3093000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":3544000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":3544000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":451000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":451000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":3544000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":3544000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":3544000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":3544000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":63663000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":63663000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":37758000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":35706000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":35962000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":256000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments":{"label":"Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest","description":"Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":29076000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":10701000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":43065000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":25316000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":12198000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":13064000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":13064000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":15173000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":15173000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":3975000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":5444000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":18469000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":21970000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":13387000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":16199000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":2931000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":6711000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-15538000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-15259000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":2434000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":6959000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":6959000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":6959000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-7445000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-6997000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":13588000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":13588000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":20585000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":20585000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":13907000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":13907000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":319000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":319000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":-48225000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-48225000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":2768000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":2768000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-4531000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-4531000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-7299000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-7299000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":21727000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":26258000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":52928000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-24898000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-47268000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-22370000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"IncomeTaxExpenseBenefit":{"label":"Income Tax Expense (Benefit)","description":"Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":3000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":62000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":-120000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":-266000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":48000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":48000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":48000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":48000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":48000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":126000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":126000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":150000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":150000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":24000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":24000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":170000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":170000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":20000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":20000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":172000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":172000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":172000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":172000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":5000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":5000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":67000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":67000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":62000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":62000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":102000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":102000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":35000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":35000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":56000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":56000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":74000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":74000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":112000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":112000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":38000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":38000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":138000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":26000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":186000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":38000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-18000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-56000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"IncomeTaxesPaidNet":{"label":"Income Taxes Paid, Net","description":"The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":86000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":86000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":86000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":86000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":132000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":132000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":146000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"IncreaseDecreaseDueFromAffiliates":{"label":"Increase (Decrease) Due from Affiliates","description":"The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-623000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":-255000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":-536000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":-536000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":-536000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":-536000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":-536000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":1201000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-47000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":3001000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":-1441000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":-1441000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-1441000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-12-31","val":1722000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"}]}},"IncreaseDecreaseInAccountsPayableAndAccruedLiabilities":{"label":"Increase (Decrease) in Accounts Payable and Accrued Liabilities","description":"The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-1588000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":2665000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":2707000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":2707000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":2707000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":2707000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":2707000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":-427000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-1438000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":-2245000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":-2707000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-2707000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-2707000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-2707000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"}]}},"IncreaseDecreaseInAccountsReceivable":{"label":"Increase (Decrease) in Accounts Receivable","description":"The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":1440000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":-19000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":1123000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":1123000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":1123000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":1123000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-03-31","val":-3977000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":-3977000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-4472000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":-4472000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":-4891000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-4891000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":-1122000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-1122000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-5674000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":437000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":2568000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":2568000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":3317000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":3317000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":2617000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":996000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-75000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-75000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":-598000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":1257000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-1674000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-2465000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"IncreaseDecreaseInAccruedLiabilities":{"label":"Increase (Decrease) in Accrued Liabilities","description":"The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":2739000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":2746000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":2746000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":2746000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":2746000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-1331000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-1331000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-1331000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-1331000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":885000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":885000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":3206000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"IncreaseDecreaseInDeferredLiabilities":{"label":"Increase (Decrease) in Deferred Liabilities","description":"Change during the period in carrying value for all deferred liabilities due within one year or operating cycle.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":35000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":35000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":35000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":35000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":35000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":85000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":85000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":85000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":85000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-76000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-76000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":55000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"IncreaseDecreaseInDerivativeAssetsAndLiabilities":{"label":"Increase (Decrease) in Derivative Assets and Liabilities","description":"The increase (decrease) during the period in the net carrying value of derivative instruments reported as assets and liabilities that are due to be disposed of within one year (or the normal operating cycle, if longer).","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":8272000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-09-30","val":-14072000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":-14787000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-14787000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-9883000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":3163000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":-5137000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":-5137000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":-6897000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-6897000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-6082000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-6082000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-20605000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-20605000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":-2698000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":59344000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":4331000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-15659000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"IncreaseDecreaseInEstimatedFutureDevelopmentCosts":{"label":"Changes in Estimated Future Development Costs","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in estimated future development costs.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":-871000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-871000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-871000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-871000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":16600000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":16600000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-11897000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves":{"label":"Changes in Future Income Tax Expense Estimates on Future Cash Flows Related to Proved Oil and Gas Reserves","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":-570000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-570000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-27000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"IncreaseDecreaseInPrepaidExpense":{"label":"Increase (Decrease) in Prepaid Expense","description":"The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-3434000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":-484000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":578000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":578000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":578000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":578000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":578000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":334000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":334000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":84000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":84000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":-58000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-58000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":170000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":170000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":170000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":170000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-29000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-29000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":279000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":279000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":230000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":230000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":855000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":855000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-377000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-377000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":209000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":209000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":1515000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":532000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":2000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-483000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"IncreaseDecreaseInReceivables":{"label":"Increase (Decrease) in Receivables","description":"The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":12924000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-5674000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":437000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-12-31","val":2617000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":996000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"}]}},"IncreaseDueToPurchasesOfMineralsInPlace":{"label":"Increase Due to Purchases of Minerals in Place","description":"Amount of increase in standardized measure of discounted future net cash flow as a result of purchases of minerals in place.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":5866000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":5866000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2014-01-01","end":"2014-12-31","val":45665000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"InterestExpense":{"label":"Interest Expense","description":"Amount of the cost of borrowed funds accounted for as interest expense.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":1009000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":281000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-06-30","val":600000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2011-04-01","end":"2011-06-30","val":300000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2011Q2"},{"start":"2011-01-01","end":"2011-09-30","val":814000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":255000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":604000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":604000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":604000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":604000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":604000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":1128000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":1128000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":2460000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":2460000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":1332000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":1332000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":4541000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":4541000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":2081000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":2081000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":6596000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":6596000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":6596000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":6596000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":2265000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":2265000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":4514000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":4514000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":2249000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":2249000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":6863000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":6863000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":2349000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":2349000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":9235000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":9235000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":2541000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":2541000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":5116000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":5116000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":2575000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":2575000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":7667000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":2551000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":10472000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":2769000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":5889000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":3120000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"InterestPaid":{"label":"Interest Paid, Including Capitalized Interest, Operating and Investing Activities","description":"Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":6547000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":6547000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":6547000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":6547000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":8786000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":8786000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":10058000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"InterestPayableCurrentAndNoncurrent":{"label":"Interest Payable","description":"Amount of interest payable on debt, including, but not limited to, trade payables.","units":{"USD":[{"end":"2011-12-31","val":500000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":500000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":500000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":500000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":300000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":200000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":200000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":200000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":200000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":200000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":200000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":200000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":200000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":200000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":300000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":200000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":200000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":200000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":200000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":200000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":200000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":200000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":100000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":200000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":200000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":200000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":200000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":200000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"InvestmentIncomeInterest":{"label":"Investment Income, Interest","description":"Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":8000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":3000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":1000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"}]}},"LeaseOperatingExpense":{"label":"Oil and Gas Property, Lease Operating Expense (Deprecated 2018-01-31)","description":"Amount of lease operating expense related to property used in oil and gas production.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":15360000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":4917000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":18732000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":6797000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":2441000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":2780000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":2780000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":3193000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":3193000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":5032000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":6544000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":13208000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":15071000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":6912000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":8003000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":20127000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":22668000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":6919000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":7597000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":25617000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":29069000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":29069000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":29069000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":6213000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":6797000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":12067000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":12067000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":5270000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":5270000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":18072000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":18072000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":6005000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":6005000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":25397000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":25397000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":5835000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":5835000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":12664000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":12664000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":6829000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":6829000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":18688000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":6024000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":25821000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":6772000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":12780000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":6008000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"Liabilities":{"label":"Liabilities","description":"Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.","units":{"USD":[{"end":"2010-12-31","val":77889000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":75163000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":186563000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":186563000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":187585000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":187585000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":187585000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":187585000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":189784000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":189712000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":262183000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":271155000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":272651000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":273718000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":274694000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":274694000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":274694000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":274694000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":287351000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":291523000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":296220000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":296092000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":296092000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":296092000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":296092000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":296092000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":303828000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":304076000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":300237000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":340317000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":340317000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":340317000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":344717000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":349881000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"LiabilitiesAndStockholdersEquity":{"label":"Liabilities and Equity","description":"Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.","units":{"USD":[{"end":"2010-12-31","val":504622000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":507855000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":458066000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":458066000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":521014000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":579934000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":459920000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":528221000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":512127000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":502486000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":528226000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":565470000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":561236000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":570758000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":563174000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":488350000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":490418000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":481045000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":498733000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":558954000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":558954000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":558954000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":524788000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":502863000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"LiabilitiesCurrent":{"label":"Liabilities, Current","description":"Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":21389000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":21448000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":7948000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":7948000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":7955000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":7955000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":7955000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":7955000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":7955000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":10482000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":12616000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":8197000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":8583000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":8583000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":8583000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":8583000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":8583000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":8583000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":14539000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":13657000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":14082000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":8482000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":8482000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":8482000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":8482000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":8482000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":16003000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":16502000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":11402000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":18630000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":18630000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":18630000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":12109000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":23269000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"LiabilitiesNoncurrent":{"label":"Liabilities, Noncurrent","description":"Amount of obligation due after one year or beyond the normal operating cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":56500000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":53715000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":178615000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":178615000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":179630000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":179630000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":179630000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":179630000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":181829000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":179230000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":249567000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":262958000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":264068000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":265135000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":266111000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":266111000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":266111000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":266111000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":272812000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":277866000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":282138000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":287610000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":287610000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":287610000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":287610000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":287610000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":287825000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":287574000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":288835000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":321687000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":321687000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":321687000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":332608000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":326612000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"LimitedPartnersCapitalAccountDistributionAmount":{"label":"Limited Partners' Capital Account, Distribution Amount","description":"The total amount of distributions to limited partners.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"}]}},"LongTermDebt":{"label":"Long-term Debt","description":"Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.","units":{"USD":[{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":222800000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":233000000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":228000000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":228000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":228000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":228000000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":228000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":228000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":235000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":242000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":245000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":250000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":250000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":250000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":250000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":250000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":250000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":245000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":250000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":280000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":280000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":280000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":290000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":285000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"LongTermLineOfCredit":{"label":"Long-term Line of Credit, Noncurrent","description":"The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.","units":{"USD":[{"end":"2010-12-31","val":27251000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":27251000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":155800000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":155800000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":172800000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":183000000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":178000000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":178000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":178000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":178000000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":178000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":178000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":185000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":192000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":195000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":200000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":200000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":200000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":200000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":200000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":200000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":195000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":200000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":230000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":230000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":230000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":240000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":235000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"NetCashProvidedByUsedInContinuingOperations":{"label":"Net Cash Provided by (Used in) Continuing Operations","description":"The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":2136000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":-6739000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":1513000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":1513000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":1513000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":1513000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":1513000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":5290000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":5290000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":3143000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":3143000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":4788000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":4788000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":1954000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":1954000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":1954000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":1954000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":39742000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":39742000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":1425000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":1425000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":1834000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":1834000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":950000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":950000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":741000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":741000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-1546000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-1546000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":6334000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":-841000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-836000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":4105000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"NetCashProvidedByUsedInFinancingActivitiesContinuingOperations":{"label":"Net Cash Provided by (Used in) Financing Activities, Continuing Operations","description":"Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":39378000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":-37226000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":95000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":-1923000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":-1923000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":-3255000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":-3255000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":-5213000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":-8616000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-19392000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":-16651000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":-18810000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-17866000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":-34531000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-34836000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-34836000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-34836000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":33712000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":32978000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":-11315000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":-11315000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":-21018000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":-21018000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":-28786000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-28786000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-8647000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-8647000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-16180000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-16180000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":-16170000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":1224000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-3975000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-14243000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"NetCashProvidedByUsedInInvestingActivitiesContinuingOperations":{"label":"Net Cash Provided by (Used in) Investing Activities, Continuing Operations","description":"Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-128028000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":-39689000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":-755000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":-755000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":-755000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":-755000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":-755000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":-5037000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":-6387000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-13632000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":-21342000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":-26676000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-34956000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":-31416000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-40433000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-40433000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-40433000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-3824000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-4387000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":-14375000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":-14375000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":-24857000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":-24857000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":-35805000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-35805000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-6738000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-6738000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-17029000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-17029000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":-25790000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":-69950000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-12509000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-17606000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"NetCashProvidedByUsedInOperatingActivitiesContinuingOperations":{"label":"Net Cash Provided by (Used in) Operating Activities, Continuing Operations","description":"Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":90786000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":70176000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":2173000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":4191000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":4191000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":5523000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":5523000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":15540000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":20293000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":36167000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":41136000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":50274000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":57610000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":67901000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":77223000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":77223000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":77223000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":9854000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":11151000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":27115000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":27115000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":47709000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":47709000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":65541000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":65541000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":16126000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":16126000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":31663000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":31663000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":48294000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":67885000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":15648000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":35954000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"NetIncomeLoss":{"label":"Net Income (Loss) Attributable to Parent","description":"The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":29073000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":10639000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":43185000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":25582000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":13016000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":15125000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":15125000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":4956000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-03-31","val":5318000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2012-01-01","end":"2012-03-31","val":5645000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-03-31","val":5645000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":18319000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":21820000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":13363000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":13363000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-04-01","end":"2012-06-30","val":16175000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":16175000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-04-01","end":"2012-06-30","val":16175000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":2761000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":6541000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-15558000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-15558000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-07-01","end":"2012-09-30","val":-15279000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-07-01","end":"2012-09-30","val":-15279000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-15279000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":2262000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":6787000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":6787000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":6787000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2012-10-01","end":"2012-12-31","val":-499000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-10-01","end":"2012-12-31","val":246000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-10-01","end":"2012-12-31","val":246000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4"},{"start":"2013-01-01","end":"2013-03-31","val":-7450000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-7002000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-03-31","val":-7002000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2013-01-01","end":"2013-03-31","val":-7002000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":13521000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":13521000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":20523000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":20523000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":20523000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q2"},{"start":"2013-04-02","end":"2013-06-30","val":20523000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-09-30","val":13805000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":13805000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":284000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":284000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-07-01","end":"2013-09-30","val":284000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":284000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":-48281000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-48281000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2013-10-01","end":"2013-12-31","val":-62086000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-10-01","end":"2013-12-31","val":-62086000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4"},{"start":"2014-01-01","end":"2014-03-31","val":2694000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":2694000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"start":"2014-01-01","end":"2014-03-31","val":2694000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-4643000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-4643000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-7337000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-7337000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":21589000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":26232000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":26232000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":52742000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2014-10-01","end":"2014-12-31","val":31153000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4"},{"start":"2015-01-01","end":"2015-03-31","val":-24936000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-47250000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"NetIncomeLossAllocatedToGeneralPartners":{"label":"Net Income (Loss) Allocated to General Partners","description":"Aggregate amount of net income allocated to general partners.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":12000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":12000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":12000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":12000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":12000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":4000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":4000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":16000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":16000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":12000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":12000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-07-01","end":"2012-09-30","val":-16000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-16000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2013-01-01","end":"2013-03-31","val":-7000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-7000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":13000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":13000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":21000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":21000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":13000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":13000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":-49000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-49000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":3000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":3000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-4000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-4000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-7000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-7000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":22000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":26000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":53000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-1839000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-9434000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-7595000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"NetIncomeLossAllocatedToLimitedPartners":{"label":"Net Income (Loss) Allocated to Limited Partners","description":"Aggregate amount of net income allocated to limited partners.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":12138000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":12138000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":12138000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":12138000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":12138000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":3845000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":3845000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":16038000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":16038000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":12193000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":12193000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":496000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":496000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-15542000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-15542000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":-3000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-3000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-3000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-3000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-7443000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-7443000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":13060000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":13060000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":20502000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":20502000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":13344000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":13344000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":284000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":284000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":-48680000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-48680000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":2691000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":2691000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-4639000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-4639000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-7330000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-7330000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":21567000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":26206000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":52689000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-23097000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-37816000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-14719000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"NetIncomeLossAvailableToCommonStockholdersBasic":{"label":"Net Income (Loss) Available to Common Stockholders, Basic","description":"Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":13016000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":12150000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":3849000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"}]}},"NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts":{"label":"Net Increase (Decrease) in Sales and Transfer Prices and Production Costs","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":-41311000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-41311000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-36843000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-36843000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":4363000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":4363000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":584000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"NonoperatingIncomeExpense":{"label":"Nonoperating Income (Expense)","description":"The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":-604000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":-604000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":-604000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":-604000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":-604000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":-356000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":-356000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-4648000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":-4648000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":-4292000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":-4292000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":-9006000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":-9007000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-4358000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-4359000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":-11246000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-11246000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-11246000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-11246000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-2150000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-2150000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":-1742000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":-1742000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":408000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":408000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":-5492000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":-5492000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":-3750000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":-3750000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":-7979000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-7979000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":-2835000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":-2835000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":-6538000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":-6538000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-3703000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-3703000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":-8597000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":-2059000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":-12262000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":-4120000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-7562000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-3442000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"NumberOfOperatingSegments":{"label":"Number of Operating Segments","description":"Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.","units":{"Item":[{"start":"2012-01-01","end":"2012-12-31","val":1,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":1,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"}],"item":[{"start":"2013-01-01","end":"2013-12-31","val":1,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":1,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAmortizationAndImpairment":{"label":"Oil and Gas Property, Successful Effort Method, Accumulated Depreciation, Depletion Amortization and Impairment","description":"Amount of accumulated depreciation, depletion, amortization and impairment of oil and gas property carried under the successful effort method.","units":{"USD":[{"end":"2011-12-31","val":263931000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":263931000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":263931000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":274896000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":286745000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":295112000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":308569000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":321377000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":324774000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":324774000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":324774000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":324774000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":330794000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":345005000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":354527000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":431837000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":431837000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":431837000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":431837000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":431837000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":440373000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":449054000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":457732000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":506368000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":506368000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":506368000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":550942000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":559893000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization":{"label":"Oil and Gas Property, Successful Effort Method, Accumulated Depreciation, Depletion and Amortization","description":"Amount of accumulated depreciation, depletion and amortization of oil and gas property carried under the successful effort method. Oil and gas property include, but not limited to, the entity's wells and related equipment and facilities.","units":{"USD":[{"end":"2010-12-31","val":342400000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":391142000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":245581000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":245581000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":263931000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":263915000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":274880000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":255647000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-12-31","val":308424000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":324630000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":324630000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-12-31","val":431636000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":431636000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":506134000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"OilAndGasPropertySuccessfulEffortMethodGross":{"label":"Oil and Gas Property, Successful Effort Method, Gross","description":"Oil and Gas properties, gross, carried under the successful effort method.","units":{"USD":[{"end":"2010-12-31","val":784346000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":822492000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":644188000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":644188000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":725486000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":725486000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":725486000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":725184000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":793460000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":651735000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":744312000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":752640000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":763499000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":840418000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":840418000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-12-31","val":876384000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":876384000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":956054000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"OilAndGasPropertySuccessfulEffortMethodNet":{"label":"Oil and Gas Property, Successful Effort Method, Net","description":"Oil and gas properties net of accumulated depreciation, depletion, amortization, impairment, and abandonment, carried under the successful effort method.","units":{"USD":[{"end":"2010-12-31","val":441946000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":431350000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":398607000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":398607000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":461555000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":461555000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":461555000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":461269000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":518580000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":396088000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":457567000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":457528000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":455075000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":515788000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":515788000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-12-31","val":444748000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":444748000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":449920000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"OperatingExpenses":{"label":"Operating Expenses","description":"Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":89559000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":25377000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":83373000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":40630000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":9044000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":10741000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":10741000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":12228000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":12228000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":19714000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":24798000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":46431000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":52002000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":22751000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":25773000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":66812000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":74796000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":20381000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":22794000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":91814000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":102633000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":102633000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":102633000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":21053000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":22627000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":43829000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":43829000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":21202000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":21202000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":64955000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":64955000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":21126000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":21126000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":155341000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":155341000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":20425000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":20425000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":41412000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":41412000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":20987000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":20987000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":61477000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":20065000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":122715000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":56990000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":86625000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":29635000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"OperatingIncomeLoss":{"label":"Operating Income (Loss)","description":"The net result for the period of deducting operating expenses from operating revenues.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":31012000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":11258000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":44020000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":25578000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":12802000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":13668000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":13668000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":15777000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":15777000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":4331000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":5438000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-03-31","val":5800000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2012-01-01","end":"2012-03-31","val":6127000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-03-31","val":6127000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":23117000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":26618000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":17679000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":17679000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-04-01","end":"2012-06-30","val":20491000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":20491000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-04-01","end":"2012-06-30","val":20491000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":11937000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":15718000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-11180000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-11180000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-07-01","end":"2012-09-30","val":-10900000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-07-01","end":"2012-09-30","val":-10900000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":-10900000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":13680000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":18205000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":18205000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":18205000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2012-10-01","end":"2012-12-31","val":1743000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-10-01","end":"2012-12-31","val":2487000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-10-01","end":"2012-12-31","val":2487000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4"},{"start":"2013-01-01","end":"2013-03-31","val":-5295000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":-4847000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-03-31","val":-4847000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2013-01-01","end":"2013-03-31","val":-4847000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":15330000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":15330000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":20177000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":20177000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":20177000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q2"},{"start":"2013-04-02","end":"2013-06-30","val":20177000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-09-30","val":19399000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":19399000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":4069000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":4069000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-07-01","end":"2013-09-30","val":4069000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":4069000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":-40246000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-40246000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2013-10-01","end":"2013-12-31","val":-59645000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-10-01","end":"2013-12-31","val":-59645000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4"},{"start":"2014-01-01","end":"2014-03-31","val":5603000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":5603000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"start":"2014-01-01","end":"2014-03-31","val":5603000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":2007000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":2007000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":-3596000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":-3596000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"start":"2014-04-01","end":"2014-06-30","val":-3596000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":30324000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":28317000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":28317000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":65190000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2014-10-01","end":"2014-12-31","val":34866000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4"},{"start":"2015-01-01","end":"2015-03-31","val":-20778000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":-39706000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":-18928000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"OtherNonoperatingIncomeExpense":{"label":"Other Nonoperating Income (Expense)","description":"Amount of income (expense) related to nonoperating activities, classified as other.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-1936000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":-557000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":-955000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":-262000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"}]}},"OtherSalesRevenueNet":{"label":"Other Revenue, Net (Deprecated 2018-01-31)","description":"Amount, after sales adjustments, returns, allowances, and discounts, of revenue classified as other.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":77000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":31000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":122000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":42000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2012-01-01","end":"2012-03-31","val":3000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":3000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":3000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":3000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":33000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":33000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":30000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":30000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":45000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":45000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":45000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":45000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":69000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":69000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":87000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":87000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":18000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":18000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":106000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":106000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":19000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":19000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":186000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":186000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":31000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":31000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":71000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":71000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":40000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":40000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":111000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":40000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":125000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":29000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":55000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":26000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"PartnersCapital":{"label":"Partners' Capital","description":"The amount of ownership interest of different classes of partners in limited partnership.","units":{"USD":[{"end":"2010-12-31","val":426733000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":432692000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-11-15","val":449439000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-11-15","val":449439000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-11-15","val":505383000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-11-15","val":505383000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2011-12-31","val":271503000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":271503000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":333429000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":333429000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":333429000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":333429000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":390150000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":390150000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2011-12-31","val":390150000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2011Q4I"},{"end":"2012-03-31","val":270208000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":266038000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":240972000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":229835000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":254508000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":290776000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":290776000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":290776000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":290776000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2012-12-31","val":290776000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-03-31","val":273885000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":279235000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":266954000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":192258000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":192258000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":192258000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":192258000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":192258000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":186590000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":176969000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":198496000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":218637000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":218637000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":218637000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":180071000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":152982000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"PartnersCapitalAccountContributions":{"label":"Partners' Capital Account, Contributions","description":"Total contributions made by each class of partners (i.e., general, limited and preferred partners).","units":{"USD":[{"start":"2011-01-01","end":"2011-09-30","val":5353000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":426000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":426000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-06-30","val":-10661000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":-9585000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"}]}},"PartnersCapitalAccountDistributions":{"label":"Partners' Capital Account, Distributions","description":"Total distributions to each class of partners (i.e., general, limited and preferred partners).","units":{"USD":[{"start":"2011-01-01","end":"2011-09-30","val":42579000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":0,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":0,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":5213000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":5200000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":15877000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":15900000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":26542000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":26500000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":10785000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":10800000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":23422000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-09-30","val":36125000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":48893000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":48893000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":12884000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":12900000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":25990000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":26000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":39589000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":53428000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":13978000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":19246000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"PartnersCapitalAccountPublicSaleOfUnits":{"label":"Partners' Capital Account, Public Sale of Units","description":"Monetary value of the issuance of new units of limited partnership interest in a public offering.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2013-01-01","end":"2013-03-31","val":59583000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":59513000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"}]}},"PartnersCapitalAccountPublicSaleOfUnitsNetOfOfferingCosts":{"label":"Partners' Capital Account, Public Sale of Units Net of Offering Costs","description":"Monetary value of the issuance of new units of limited partnership interest in a public offering, net of offering costs. This is a parenthetical disclosure.","units":{"USD":[{"start":"2013-01-01","end":"2013-09-30","val":59513000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":59513000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":59513000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":4237000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":14810000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-09-30","val":23419000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":25984000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":3000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":3000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"PartnersCapitalAccountUnitBasedCompensation":{"label":"Partners' Capital Account, Unit-based Payment Arrangement, Amount","description":"Amount of increase (decrease) in partners' capital account for unit-based payment arrangement issued by partnership. Partner includes, but is not limited to, general, limited and preferred partners.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":69000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":150000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":231000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":115000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":253000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-09-30","val":391000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-12-31","val":549000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":549000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":285000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":534000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-09-30","val":819000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":1081000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":345000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":838000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"PaymentsOfCapitalDistribution":{"label":"Payments of Capital Distribution","description":"Cash outflow to owners or shareholders, excluding ordinary dividends. Includes special dividends.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":80463000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":42579000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":311200000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":0,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":5213000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":5213000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":15877000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":15877000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":26542000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":26542000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":37262000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":10785000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":10785000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":23422000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":23422000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":36125000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":36125000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":48893000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":48893000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":12884000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":12884000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":25990000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":25990000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":39589000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":53428000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":13978000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":19246000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"PaymentsOfFinancingCosts":{"label":"Payments of Financing Costs","description":"The cash outflow for loan and debt issuance costs.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":29000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":1415000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":1415000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":1415000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":1415000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":1415000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-06-30","val":532000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":532000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":561000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":561000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":562000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":562000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":562000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":562000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2014-01-01","end":"2014-12-31","val":1332000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"PaymentsOfStockIssuanceCosts":{"label":"Payments of Stock Issuance Costs","description":"The cash outflow for cost incurred directly with the issuance of an equity security.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":4716000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":4716000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":4716000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":4716000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":4716000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"}]}},"PaymentsToAcquireOilAndGasPropertyAndEquipment":{"label":"Payments to Acquire Oil and Gas Property and Equipment","description":"The cash outflow to purchase long lived physical asset for use in the normal oil and gas operations and to purchase mineral interests in oil and gas properties not intended for resale.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":104147000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":390000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":14000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":14000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":14000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":14000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":14000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":274000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":1624000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":1009000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":8719000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":1008000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":8035000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":1003000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":10020000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":10020000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":10020000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2014-01-01","end":"2014-12-31","val":37616000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":229000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":230000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"PaymentsToAcquireOtherPropertyPlantAndEquipment":{"label":"Payments to Acquire Other Property, Plant, and Equipment","description":"Amount of cash outflow from the acquisition of or improvements to long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":35000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":45000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2012-01-01","end":"2012-03-31","val":16000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":16000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":16000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":16000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":16000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":16000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":16000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":16000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":16000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":16000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"}]}},"PaymentsToExploreAndDevelopOilAndGasProperties":{"label":"Payments to Explore and Develop Oil and Gas Properties","description":"The cash outflow for exploration and development of oil and gas properties. It includes cash payments related to development of oil and gas wells drilled at previously untested geologic structures (to determine the presence of oil or gas) and wells drilled at sites where the presence of oil or gas has already been established (to extract the oil or gas).","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":23846000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":42210000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":741000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":741000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":741000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":741000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":741000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":4747000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":4747000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":12607000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":12607000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":25652000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":26905000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":30397000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":30397000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":30397000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":30397000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":3824000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":4387000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":14375000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":14375000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":24857000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":24857000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":35805000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":35805000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":6803000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":6803000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":17094000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":17094000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":25840000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":32389000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":12280000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":17376000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"PrepaidExpenseCurrent":{"label":"Prepaid Expense, Current","description":"Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.","units":{"USD":[{"end":"2010-12-31","val":1722000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q4I"},{"end":"2011-09-30","val":1238000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3I"},{"end":"2011-12-31","val":578000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"end":"2011-12-31","val":578000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"end":"2011-12-31","val":578000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":578000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":578000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"end":"2011-12-31","val":578000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":578000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":912000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1I"},{"end":"2012-06-30","val":662000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":520000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":748000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":748000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":748000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":748000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":748000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":748000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":719000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1027000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":978000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1603000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":1603000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":1603000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":1603000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":1603000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1208000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1717000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":2858000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1840000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":1840000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":1840000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1672000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1240000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod":{"label":"Previously Estimated Development Costs Incurred During Period (Deprecated 2015-01-31)","description":"Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of previously estimated development costs incurred.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":12364000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":12364000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-12164000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":12164000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-25408000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":25408000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":27073000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"ProceedsFromIssuanceInitialPublicOffering":{"label":"Proceeds from Issuance Initial Public Offering","description":"The cash inflow associated with the amount received from entity's first offering of stock to the public.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":188451000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"}]}},"ProceedsFromIssuanceOfCommonLimitedPartnersUnits":{"label":"Proceeds from Issuance of Common Limited Partners Units","description":"The cash inflow from the issuance of common limited partners units during the period.","units":{"USD":[{"start":"2013-01-01","end":"2013-03-31","val":59583000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":59583000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":59513000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":59513000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":59513000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":59513000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":59513000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":59513000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":4237000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":4237000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":14810000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":14810000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":23419000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":25984000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":3000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":3000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"ProceedsFromIssuanceOfSecuredDebt":{"label":"Proceeds from Issuance of Secured Debt","description":"The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":50000000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":50000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":50000000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":50000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":50000000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":50000000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":50000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":50000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"}]}},"ProceedsFromLongTermLinesOfCredit":{"label":"Proceeds from Long-term Lines of Credit","description":"The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":3713000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":155800000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":155800000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":155800000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":155800000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":155800000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-06-30","val":67000000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":67000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":77200000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":77200000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":77200000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":77200000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":77200000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":77200000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":29000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":29000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":38000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":38000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":45000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":45000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":60000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":60000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":10000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":10000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":20000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":20000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":30000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":68000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":10000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":10000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"ProceedsFromPartnershipContribution":{"label":"Proceeds from Partnership Contribution","description":"The cash inflow from the capital received in cash from a partner in a partnership during the period.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":125475000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":5353000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"}]}},"ProceedsFromSaleOfOilAndGasPropertyAndEquipment":{"label":"Proceeds from Sale of Oil and Gas Property and Equipment","description":"The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.","units":{"USD":[{"start":"2011-01-01","end":"2011-09-30","val":2956000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2014-01-01","end":"2014-03-31","val":65000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":65000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":65000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":65000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":50000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":55000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"PropertyPlantAndEquipmentFairValueDisclosure":{"label":"Property, Plant, and Equipment, Fair Value Disclosure","description":"Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.","units":{"USD":[{"end":"2015-03-31","val":411200000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":411300000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"PropertyPlantAndEquipmentGross":{"label":"Property, Plant and Equipment, Gross","description":"Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.","units":{"USD":[{"end":"2011-12-31","val":725486000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":793762000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":763817000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":800624000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":840736000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":840736000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":840736000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":840736000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":808442000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":859554000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":868191000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":876674000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":876674000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":876674000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":876674000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":876674000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":887605000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":895352000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":904497000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":956326000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":956326000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":956326000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":963400000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":972398000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"PropertyPlantAndEquipmentNet":{"label":"Property, Plant and Equipment, Net","description":"Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.","units":{"USD":[{"end":"2011-12-31","val":461555000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":518866000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":455248000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":479247000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":515962000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":515962000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":515962000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":515962000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":477648000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":514549000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":513664000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":444837000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":444837000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":444837000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":444837000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":444837000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":447232000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":446298000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":446765000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":449958000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":449958000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":449958000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":412458000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":412505000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"PropertyPlantAndEquipmentOther":{"label":"Property, Plant and Equipment, Other, Gross","description":"Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.","units":{"USD":[{"end":"2011-12-31","val":302000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":302000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":302000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":302000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":318000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":318000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":318000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":318000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":318000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":318000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":318000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":318000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":318000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":307000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":290000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":290000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":290000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":290000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":290000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":290000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":290000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":289000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":271000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":272000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":272000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":272000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":272000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":272000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy":{"label":"Proved Developed and Undeveloped Reserve, Extension and Discovery (Energy)","description":"Energy measure of increase in quantity of proved reserve of oil and gas resulting from the extension of the proved acreage of previously discovered reservoir or discovery of new field with proved reserve or of new reservoir of proved reserve in old field, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).","units":{"MBoe":[{"start":"2012-01-01","end":"2012-12-31","val":781,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":185,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":945,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"ProvedDevelopedAndUndevelopedReserveNetEnergy":{"label":"Proved Developed and Undeveloped Reserve, Net (Energy)","description":"Energy measure of proved reserve of oil and gas, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).","units":{"MBoe":[{"end":"2011-12-31","val":33226,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2011Q4I"},{"end":"2012-12-31","val":31432,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":30104,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":33845,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"ProvedDevelopedAndUndevelopedReserveProductionEnergy":{"label":"Proved Developed and Undeveloped Reserve, Production (Energy)","description":"Energy measure of decrease in quantity of proved reserve of oil and gas resulting from production, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).","units":{"MBoe":[{"start":"2012-01-01","end":"2012-12-31","val":-2560,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-2360,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-2348,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy":{"label":"Proved Developed and Undeveloped Reserve, Purchase of Mineral in Place (Energy)","description":"Energy measure of increase in quantity of proved reserve of oil and gas resulting from purchase of mineral in place, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).","units":{"MBoe":[{"start":"2012-01-01","end":"2012-12-31","val":268,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2014-01-01","end":"2014-12-31","val":2828,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy":{"label":"Proved Developed and Undeveloped Reserve, Revision of Previous Estimate (Energy)","description":"Energy measure of increase (decrease) in quantity of proved reserve of oil and gas related to revision of a previous estimate resulting from new information, except for an increase in proved acreage, or change in economic factors, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).","units":{"MBoe":[{"start":"2012-01-01","end":"2012-12-31","val":-283,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":847,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":2316,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"ProvedDevelopedReservesBOE1":{"label":"Proved Developed Reserves (Energy)","description":"Energy measure of interests in proved developed reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.","units":{"MBoe":[{"end":"2012-12-31","val":26491,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":26495,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":29629,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"ProvedOilAndGasPropertySuccessfulEffortMethod":{"label":"Proved Oil and Gas Property, Successful Effort Method","description":"Oil and Gas properties with proved reserves under the successful effort method.","units":{"USD":[{"end":"2011-12-31","val":723505000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":723505000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":723505000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":791737000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":742424000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":751104000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":762261000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":799042000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":839154000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":839154000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":839154000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":839154000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":806860000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":857983000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":866643000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":875126000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":875126000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":875126000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":875126000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":875126000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":886072000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":893825000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":902988000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":954819000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":954819000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":954819000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":961907000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":970906000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"ProvedUndevelopedReserveBOE1":{"label":"Proved Undeveloped Reserves (Energy)","description":"Energy measure of proved undeveloped reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas.","units":{"MBoe":[{"end":"2012-12-31","val":4941,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":3609,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":4216,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"RelatedPartyTransactionDueFromToRelatedParty":{"label":"Related Party Transaction, Due from (to) Related Party","description":"Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.","units":{"USD":[{"end":"2011-12-31","val":-536000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":-535000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":-536000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":-536000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":-536000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2011Q4I"},{"end":"2012-06-30","val":-583000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":2465000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2012-12-31","val":-1977000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-03-31","val":2800000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":3469000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":2293000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":-255000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":-255000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":-255000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":-255000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":-255000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":4157000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":5737000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":5760000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":5697000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":5697000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":5697000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":6351000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1456000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty":{"label":"Related Party Transaction, Expenses from Transactions with Related Party","description":"Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":-29718000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"}]}},"RepaymentsOfAssumedDebt":{"label":"Repayments of Assumed Debt","description":"The cash outflow from the repayments of a long-term debt originally issued by another party but is assumed by the entity.","units":{"USD":[{"start":"2011-11-16","end":"2011-11-17","val":27300000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-11-17","val":27300000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-01","end":"2011-11-30","val":27300000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2011-11-01","end":"2011-11-30","val":27300000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"}]}},"RepaymentsOfLongTermLinesOfCredit":{"label":"Repayments of Long-term Lines of Credit","description":"The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":27251000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":27251000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":27251000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":27251000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":27251000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-06-30","val":50000000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":50000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":50000000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":50000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":55000000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":55000000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":55000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":55000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":22000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":22000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":24000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":24000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":28000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":28000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":38000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":38000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":10000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":10000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":25000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":25000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":30000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":38000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-06-30","val":5000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"RevenueFromRelatedParties":{"label":"Revenue from Related Parties","description":"Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.","units":{"USD":[{"start":"2012-01-01","end":"2012-06-30","val":11189000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"}]}},"RevisionsOfPreviousQuantityEstimates":{"label":"Revisions of Previous Quantity Estimates","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":-20132000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-20132000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-1373000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-1373000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":11054000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":11054000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":30256000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts":{"label":"Sales and Transfers of Oil and Gas Produced, Net of Production Costs","description":"Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":9974000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":9974000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":11449000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":60737000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":60737000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":71186000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-71186000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":80117000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-80117000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-81986000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"SalesRevenueNet":{"label":"Revenue, Net (Deprecated 2018-01-31)","description":"Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":120571000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":36635000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":127393000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":66208000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":21846000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":24409000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":24409000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":28005000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":28005000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":24045000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":23856000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-03-31","val":30598000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2012-01-01","end":"2012-03-31","val":32356000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-03-31","val":32356000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":69548000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":78620000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":40430000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":22613000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-04-01","end":"2012-06-30","val":46264000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":46264000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-04-01","end":"2012-06-30","val":46264000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":78749000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":90514000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":9201000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":24826000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-07-01","end":"2012-09-30","val":11894000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-07-01","end":"2012-09-30","val":11894000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":11894000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":105494000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":120838000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":120838000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":120838000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2012-10-01","end":"2012-12-31","val":22068000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-10-01","end":"2012-12-31","val":30324000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-10-01","end":"2012-12-31","val":30324000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4"},{"start":"2013-01-01","end":"2013-03-31","val":15758000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":17780000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-03-31","val":17780000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2013-01-01","end":"2013-03-31","val":17780000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":59159000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":59159000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":41379000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":41379000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":41379000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q2"},{"start":"2013-04-02","end":"2013-06-30","val":41379000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-09-30","val":84354000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":84354000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":25195000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":25195000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-07-01","end":"2013-09-30","val":25195000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":25195000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":115095000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":115095000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2013-10-01","end":"2013-12-31","val":30741000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-10-01","end":"2013-12-31","val":30741000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4"},{"start":"2014-01-01","end":"2014-03-31","val":26028000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":26028000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"start":"2014-01-01","end":"2014-03-31","val":26028000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":43419000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":43419000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":17391000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":17391000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"start":"2014-04-01","end":"2014-06-30","val":17391000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":91801000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":48382000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":48382000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":187905000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2014-10-01","end":"2014-12-31","val":96104000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4"},{"start":"2015-01-01","end":"2015-03-31","val":36212000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":46919000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":10707000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"SecuredLongTermDebt":{"label":"Secured Long-term Debt, Noncurrent","description":"Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.","units":{"USD":[{"end":"2012-06-30","val":50000000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":50000000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":50000000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":50000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":50000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":50000000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":50000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":50000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":50000000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":50000000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":50000000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":50000000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":50000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":50000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":50000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":50000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":50000000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":50000000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":50000000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":50000000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":50000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":50000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":50000000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":50000000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"ShareBasedCompensation":{"label":"Share-based Payment Arrangement, Noncash Expense","description":"Amount of noncash expense for share-based payment arrangement.","units":{"USD":[{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":31000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":69000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":69000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":150000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":150000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-09-30","val":231000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":231000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":313000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":115000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":115000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":253000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":253000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-01-01","end":"2013-09-30","val":391000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":391000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-01-01","end":"2013-12-31","val":549000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":549000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":285000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":285000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":534000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":534000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-01-01","end":"2014-09-30","val":819000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-01-01","end":"2014-12-31","val":1081000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":345000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":838000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"}]}},"ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized":{"label":"Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized","description":"Number of shares authorized for issuance under share-based payment arrangement.","units":{"shares":[{"end":"2012-06-30","val":1500000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1500000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1500000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1500000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012Q4I"},{"end":"2013-03-31","val":1500000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1500000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":1500000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1500000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1500000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1500000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1500000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1500000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1500000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1500000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant":{"label":"Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant","description":"The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.","units":{"shares":[{"end":"2012-06-30","val":1449126,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1449126,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1431258,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1431258,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012Q4I"},{"end":"2013-03-31","val":1409061,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1409061,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":1409061,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1297666,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1306780,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1308345,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1304300,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1037555,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1025013,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1025013,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther":{"label":"Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Other","description":"Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":-13567000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":-13567000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":-18610000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":-18610000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-12901000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":-12901000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-17846000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"}]}},"StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves":{"label":"Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves","description":"Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves.","units":{"USD":[{"end":"2011-11-15","val":400988000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-11-15","val":400988000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":391014000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":391014000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2011-12-31","val":435789000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2011-12-31","val":435789000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2011Q4I"},{"end":"2012-12-31","val":325241000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":325241000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":387896000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2012-12-31","val":387896000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012Q4I"},{"end":"2013-12-31","val":392557000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":392557000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-12-31","val":441671000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014Q4I"}]}},"TaxesOther":{"label":"Taxes, Other","description":"Amount of tax expense classified as other.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":6889000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":1822000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":5731000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":2711000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":850000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2011-11-16","end":"2011-12-31","val":976000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":976000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":1076000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":1076000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-03-31","val":1486000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-03-31","val":1720000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":3361000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":3800000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-04-01","end":"2012-06-30","val":1700000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":1929000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":5348000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-09-30","val":5950000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2012-07-01","end":"2012-09-30","val":1987000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":2150000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":7009000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2012-01-01","end":"2012-12-31","val":7790000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2012-01-01","end":"2012-12-31","val":7790000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2012-01-01","end":"2012-12-31","val":7790000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":1693000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"start":"2013-01-01","end":"2013-03-31","val":1846000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":4044000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-01-01","end":"2013-06-30","val":4044000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2013-04-01","end":"2013-06-30","val":2198000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":2198000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":6478000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-01-01","end":"2013-09-30","val":6478000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2013-07-01","end":"2013-09-30","val":2434000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"start":"2013-07-01","end":"2013-09-30","val":2434000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":8614000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"start":"2013-01-01","end":"2013-12-31","val":8614000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":2400000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"start":"2014-01-01","end":"2014-03-31","val":2400000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":4648000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-01-01","end":"2014-06-30","val":4648000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2014-04-01","end":"2014-06-30","val":2248000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"start":"2014-04-01","end":"2014-06-30","val":2248000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q2"},{"start":"2014-01-01","end":"2014-09-30","val":6820000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2014-07-01","end":"2014-09-30","val":2172000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3"},{"start":"2014-01-01","end":"2014-12-31","val":8738000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":1266000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":2748000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04"},{"start":"2015-04-01","end":"2015-06-30","val":1482000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2"}]}},"UnprovedOilAndGasPropertySuccessfulEffortMethod":{"label":"Unproved Oil and Gas Property, Successful Effort Method","description":"Oil and Gas properties with unproved reserves under the successful effort method.","units":{"USD":[{"end":"2011-12-31","val":1679000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":1679000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"end":"2011-12-31","val":1679000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2011-12-31","val":1723000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":1570000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1218000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3I"},{"end":"2012-12-31","val":1238000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"end":"2012-12-31","val":1264000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08"},{"end":"2012-12-31","val":1264000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"end":"2012-12-31","val":1264000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"end":"2012-12-31","val":1264000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06"},{"end":"2012-12-31","val":1264000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12","frame":"CY2012Q4I"},{"end":"2013-03-31","val":1264000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1I"},{"end":"2013-06-30","val":1264000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2I"},{"end":"2013-09-30","val":1258000,"accn":"0001104659-13-081645","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-06","frame":"CY2013Q3I"},{"end":"2013-12-31","val":1258000,"accn":"0001104659-14-018740","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-12"},{"end":"2013-12-31","val":1258000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07"},{"end":"2013-12-31","val":1258000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06"},{"end":"2013-12-31","val":1258000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":1258000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1243000,"accn":"0001104659-14-035765","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-07","frame":"CY2014Q1I"},{"end":"2014-06-30","val":1238000,"accn":"0001104659-14-057592","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":1238000,"accn":"0001104659-14-077055","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1235000,"accn":"0001104659-15-016710","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-04"},{"end":"2014-12-31","val":1235000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":1235000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1221000,"accn":"0001104659-15-034920","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":1220000,"accn":"0001104659-15-055872","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-04","frame":"CY2015Q2I"}]}},"UnrealizedGainLossOnCommodityContracts":{"label":"Unrealized Gain (Loss) on Commodity Contracts","description":"The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open agreements to purchase or sell mineral resources, energy, and agricultural products at some future point held at each balance sheet date, that was included in earnings for the period.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-2502000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":-4542000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":26144000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":29253000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2011-11-16","end":"2011-12-31","val":8272000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":6664000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":6664000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":6664000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":-271000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-03-31","val":11000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-06-30","val":12365000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-06-30","val":11008000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":12953000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2012Q2"},{"start":"2012-04-01","end":"2012-06-30","val":10997000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":-10455000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":-21463000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":-10602000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":-11264000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-03-31","val":-10029000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":39000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2013-04-01","end":"2013-06-30","val":10211000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07","frame":"CY2013Q2"}]}},"UnrealizedGainLossOnDerivativesAndCommodityContracts":{"label":"Unrealized Gain (Loss) on Derivatives and Commodity Contracts","description":"The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-2949000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-01-01","end":"2011-09-30","val":26441000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-11-16","end":"2011-12-31","val":8272000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":6664000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":6664000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":6664000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":534000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-03-31","val":816000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11"},{"start":"2012-01-01","end":"2012-06-30","val":10318000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"},{"start":"2012-01-01","end":"2012-06-30","val":8961000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-09-30","val":-14626000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-01-01","end":"2012-12-31","val":-14787000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":-15449000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2013-01-01","end":"2013-03-31","val":-9740000,"accn":"0001104659-13-038676","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-08","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":3163000,"accn":"0001104659-13-060725","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-07"}]}},"UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss":{"label":"Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)","description":"Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.","units":{"USD":[{"start":"2010-01-01","end":"2010-09-30","val":-447000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2010-07-01","end":"2010-09-30","val":-115000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2010Q3"},{"start":"2011-01-01","end":"2011-09-30","val":297000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20"},{"start":"2011-07-01","end":"2011-09-30","val":134000,"accn":"0001104659-11-070351","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-12-20","frame":"CY2011Q3"},{"start":"2012-01-01","end":"2012-03-31","val":805000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"}]}},"WeightedAverageLimitedPartnershipUnitsOutstanding":{"label":"Weighted Average Limited Partnership Units Outstanding, Basic","description":"Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period.","units":{"shares":[{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":22421000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":22425000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":22428000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":22426000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":22428000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":22425000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":22425000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"}]}},"WeightedAverageLimitedPartnershipUnitsOutstandingDiluted":{"label":"Weighted Average Limited Partnership Units Outstanding, Diluted","description":"Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit.","units":{"shares":[{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28"},{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"},{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-12-082906","fy":2011,"fp":"FY","form":"8-K","filed":"2012-12-10"},{"start":"2011-11-16","end":"2011-12-31","val":22418000,"accn":"0001104659-12-021401","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-27"},{"start":"2012-01-01","end":"2012-03-31","val":22421000,"accn":"0001104659-12-036345","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-11","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":22425000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":22428000,"accn":"0001104659-12-057639","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":22426000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":22428000,"accn":"0001104659-12-075775","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":22425000,"accn":"0001104659-13-066713","fy":2012,"fp":"FY","form":"8-K","filed":"2013-08-28","frame":"CY2012"},{"start":"2012-01-01","end":"2012-12-31","val":22425000,"accn":"0001104659-13-019884","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-13"}]}}}}}