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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":"2010-01-01","end":"2010-12-31","val":376000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"start":"2010-01-01","end":"2010-12-31","val":376000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14","frame":"CY2010"},{"start":"2010-12-31","end":"2011-12-31","val":882000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14","frame":"CY2011"},{"start":"2011-01-01","end":"2011-12-31","val":882000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"start":"2011-01-01","end":"2011-12-31","val":882000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14"},{"start":"2012-01-01","end":"2012-03-31","val":-370000,"accn":"0001104659-12-036001","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-10","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":790000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2012-01-01","end":"2012-06-30","val":790000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16"},{"start":"2012-01-01","end":"2012-09-30","val":1225000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"start":"2012-01-01","end":"2012-12-31","val":1671000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14"},{"start":"2012-01-01","end":"2012-12-31","val":1671000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2012-01-01","end":"2012-12-31","val":1671000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":517000,"accn":"0001445305-13-001600","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-07-09","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":1136000,"accn":"0001335190-13-000014","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2013-01-01","end":"2013-09-30","val":1824000,"accn":"0001335190-13-000076","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08"},{"start":"2013-01-01","end":"2013-12-31","val":2264000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2013-01-01","end":"2013-12-31","val":2264000,"accn":"0001335190-14-000037","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09"},{"start":"2013-01-01","end":"2013-12-31","val":2264000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2013-01-01","end":"2013-12-31","val":2264000,"accn":"0001335190-14-000088","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"start":"2013-01-01","end":"2013-12-31","val":2264000,"accn":"0001335190-14-000134","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"start":"2013-01-01","end":"2013-12-31","val":2264000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":368000,"accn":"0001335190-14-000037","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":751000,"accn":"0001335190-14-000088","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"start":"2014-01-01","end":"2014-09-30","val":1731000,"accn":"0001335190-14-000134","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"start":"2014-01-01","end":"2014-12-31","val":1478000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":1478000,"accn":"0001335190-15-000065","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-11"},{"start":"2014-01-01","end":"2014-12-31","val":1478000,"accn":"0001335190-15-000089","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-07"},{"start":"2014-01-01","end":"2014-12-31","val":1478000,"accn":"0001335190-15-000099","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09"},{"start":"2014-01-01","end":"2014-12-31","val":1478000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":618000,"accn":"0001335190-15-000065","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-11","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":1281000,"accn":"0001335190-15-000089","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-07"},{"start":"2015-01-01","end":"2015-09-30","val":1928000,"accn":"0001335190-15-000099","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09"},{"start":"2015-01-01","end":"2015-12-31","val":2597000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2015"}]}},"AssetRetirementObligationCashPaidToSettle":{"label":"Asset 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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 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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 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Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. 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The net investment in direct financing and sales-type leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs on direct financing leases; less: (i) estimated executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.","units":{"USD":[{"end":"2013-09-30","val":16500000,"accn":"0001335190-13-000076","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08","frame":"CY2013Q3I"}]}},"CashAcquiredFromAcquisition":{"label":"Cash Acquired from Acquisition","description":"The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":235000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"start":"2009-01-01","end":"2009-12-31","val":235000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14","frame":"CY2009"},{"start":"2010-01-01","end":"2010-06-30","val":2547000,"accn":"0000950123-11-074639","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"start":"2009-12-31","end":"2010-12-31","val":0,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14","frame":"CY2010"},{"start":"2010-01-01","end":"2010-12-31","val":0,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"start":"2010-01-01","end":"2010-12-31","val":0,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14"},{"start":"2011-01-01","end":"2011-06-30","val":2547000,"accn":"0000950123-11-074639","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"start":"2011-01-01","end":"2011-06-30","val":2500000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2011-01-01","end":"2011-06-30","val":2500000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16"},{"start":"2011-01-01","end":"2011-09-30","val":2547000,"accn":"0000950123-11-097039","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2011-01-01","end":"2011-09-30","val":2500000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"start":"2010-12-31","end":"2011-12-31","val":2500000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14","frame":"CY2011"},{"start":"2011-01-01","end":"2011-12-31","val":2500000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"start":"2011-01-01","end":"2011-12-31","val":2500000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14"},{"start":"2011-01-01","end":"2011-12-31","val":2500000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2011-01-01","end":"2011-12-31","val":2500000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2012-01-01","end":"2012-09-30","val":0,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"start":"2012-01-01","end":"2012-12-31","val":34000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14"},{"start":"2012-01-01","end":"2012-12-31","val":34000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2012-01-01","end":"2012-12-31","val":34000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2012-01-01","end":"2012-12-31","val":34000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":0,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","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":"2008-12-31","val":6120000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"end":"2008-12-31","val":6120000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14","frame":"CY2008Q4I"},{"end":"2009-12-31","val":2282000,"accn":"0000950123-11-074639","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"end":"2009-12-31","val":2282000,"accn":"0000950123-11-097039","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"end":"2009-12-31","val":2282000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"end":"2009-12-31","val":2282000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14"},{"end":"2009-12-31","val":2282000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14","frame":"CY2009Q4I"},{"end":"2010-06-30","val":4645000,"accn":"0000950123-11-074639","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09","frame":"CY2010Q2I"},{"end":"2010-09-30","val":837000,"accn":"0000950123-11-097039","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09","frame":"CY2010Q3I"},{"end":"2010-12-31","val":554000,"accn":"0000950123-11-074639","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"end":"2010-12-31","val":554000,"accn":"0000950123-11-097039","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"end":"2010-12-31","val":554000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"end":"2010-12-31","val":554000,"accn":"0001104659-12-036001","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-10"},{"end":"2010-12-31","val":554000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"end":"2010-12-31","val":554000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16"},{"end":"2010-12-31","val":554000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"end":"2010-12-31","val":554000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14"},{"end":"2010-12-31","val":554000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14"},{"end":"2010-12-31","val":554000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"end":"2010-12-31","val":554000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17","frame":"CY2010Q4I"},{"end":"2011-03-31","val":3836000,"accn":"0001104659-12-036001","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-10","frame":"CY2011Q1I"},{"end":"2011-06-30","val":4750000,"accn":"0000950123-11-074639","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-09"},{"end":"2011-06-30","val":4750000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"end":"2011-06-30","val":4750000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16","frame":"CY2011Q2I"},{"end":"2011-09-30","val":8175000,"accn":"0000950123-11-097039","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"end":"2011-09-30","val":8175000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16","frame":"CY2011Q3I"},{"end":"2011-12-31","val":14851000,"accn":"0001193125-12-134667","fy":2011,"fp":"FY","form":"10-K/A","filed":"2012-03-27"},{"end":"2011-12-31","val":14851000,"accn":"0001104659-12-036001","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-10"},{"end":"2011-12-31","val":14851000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"end":"2011-12-31","val":14851000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16"},{"end":"2011-12-31","val":14851000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"end":"2011-12-31","val":14851000,"accn":"0001104659-13-002120","fy":2011,"fp":"FY","form":"8-K","filed":"2013-01-14"},{"end":"2011-12-31","val":14851000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14"},{"end":"2011-12-31","val":14851000,"accn":"0001445305-13-001600","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-07-09"},{"end":"2011-12-31","val":14851000,"accn":"0001335190-13-000014","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"end":"2011-12-31","val":14851000,"accn":"0001335190-13-000076","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-08"},{"end":"2011-12-31","val":14851000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"end":"2011-12-31","val":57623000,"accn":"0001335190-14-000037","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09"},{"end":"2011-12-31","val":14851000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"end":"2011-12-31","val":14851000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed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and Cash Equivalents, Period Increase (Decrease)","description":"Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the 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. Includes effect from exchange rate 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recognized.","units":{"USD":[{"end":"2013-12-31","val":940000,"accn":"0001335190-14-000037","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09"},{"end":"2013-12-31","val":940000,"accn":"0001335190-14-000088","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"end":"2013-12-31","val":940000,"accn":"0001335190-14-000134","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07"},{"end":"2013-12-31","val":940000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2013Q4I"},{"end":"2014-03-31","val":694000,"accn":"0001335190-14-000037","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09","frame":"CY2014Q1I"},{"end":"2014-06-30","val":537000,"accn":"0001335190-14-000088","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08","frame":"CY2014Q2I"},{"end":"2014-09-30","val":436000,"accn":"0001335190-14-000134","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-07","frame":"CY2014Q3I"},{"end":"2014-12-31","val":347191000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"end":"2014-12-31","val":347191000,"accn":"0001335190-15-000065","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-11"},{"end":"2014-12-31","val":347191000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2014Q4I"},{"end":"2015-03-31","val":346912000,"accn":"0001335190-15-000065","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-11","frame":"CY2015Q1I"},{"end":"2015-12-31","val":166099000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2015Q4I"}]}},"EquityMethodInvestmentsFairValueDisclosure":{"label":"Equity 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Abandonment and Impairment Expense","description":"The adjustment to expense previously capitalized costs of drilling exploratory wells when proved reserves are not found or when the entity obtains information that raises substantial doubt about the economic or operational viability of the project.","units":{"USD":[{"start":"2009-12-31","end":"2010-12-31","val":942000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14","frame":"CY2010"},{"start":"2010-12-31","end":"2011-12-31","val":2645000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14","frame":"CY2011"},{"start":"2011-01-01","end":"2011-12-31","val":2605000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2011-01-01","end":"2011-12-31","val":2605000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2012-01-01","end":"2012-03-31","val":9016000,"accn":"0001445305-13-001600","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-07-09","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":18425000,"accn":"0001335190-13-000014","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2012-04-01","end":"2012-06-30","val":9409000,"accn":"0001335190-13-000014","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-12-31","val":117216000,"accn":"0001445305-13-001485","fy":2012,"fp":"FY","form":"10-K","filed":"2013-06-14"},{"start":"2012-01-01","end":"2012-12-31","val":78221000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2012-01-01","end":"2012-12-31","val":78221000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2012-01-01","end":"2012-12-31","val":80375000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":29783000,"accn":"0001445305-13-001600","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-07-09","frame":"CY2013Q1"},{"start":"2013-01-01","end":"2013-06-30","val":34940000,"accn":"0001335190-13-000014","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2013-04-01","end":"2013-06-30","val":5157000,"accn":"0001335190-13-000014","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-12-31","val":97342000,"accn":"0001445305-14-000601","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2013-01-01","end":"2013-12-31","val":97342000,"accn":"0001335190-14-000081","fy":2013,"fp":"FY","form":"10-K/A","filed":"2014-07-17"},{"start":"2013-01-01","end":"2013-12-31","val":100389000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":100389000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":118509000,"accn":"0001335190-15-000024","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":118509000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":59831000,"accn":"0001335190-16-000129","fy":2015,"fp":"FY","form":"10-K","filed":"2016-05-06","frame":"CY2015"}]}},"ExplorationAndProductionRevenue":{"label":"Exploration and Production Revenue (Deprecated 2018-01-31)","description":"Revenue related to the upstream oil and gas activities, such as exploration, development, and production of crude petroleum.","units":{"USD":[{"start":"2011-01-01","end":"2011-06-30","val":1204000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16"},{"start":"2011-01-01","end":"2011-06-30","val":1204000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2011-04-01","end":"2011-06-30","val":1211000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16","frame":"CY2011Q2"},{"start":"2011-04-01","end":"2011-06-30","val":1211000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2011-01-01","end":"2011-09-30","val":3729000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"start":"2011-07-01","end":"2011-09-30","val":2525000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16","frame":"CY2011Q3"},{"start":"2012-01-01","end":"2012-06-30","val":4615000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16"},{"start":"2012-01-01","end":"2012-06-30","val":4615000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2012-04-01","end":"2012-06-30","val":957000,"accn":"0001104659-12-078634","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-11-16","frame":"CY2012Q2"},{"start":"2012-04-01","end":"2012-06-30","val":957000,"accn":"0001104659-12-056615","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2012-01-01","end":"2012-09-30","val":14330000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16"},{"start":"2012-07-01","end":"2012-09-30","val":4616000,"accn":"0001104659-12-078646","fy":2012,"fp":"Q3","form":"10-Q/A","filed":"2012-11-16","frame":"CY2012Q3"}]}},"ExplorationCosts":{"label":"Exploration 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Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or \"\"G&G\"\" costs. Exploration costs also include costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, the maintenance of land and lease records, dry hole contributions and bottom hole contributions, costs of drilling and equipping exploratory wells and costs of drilling exploratory-type stratigraphic test 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Expense","description":"\"Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or \"\"G&G\"\" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. 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The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. 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