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Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.","units":{"USD":[{"end":"2010-12-31","val":-1324154,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010Q4I"},{"end":"2010-12-31","val":-1324154,"accn":"0001193125-11-302486","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"end":"2010-12-31","val":-1324154,"accn":"0001193125-11-216984","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-10"},{"end":"2011-06-30","val":-1312553,"accn":"0001193125-11-216984","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-10","frame":"CY2011Q2I"},{"end":"2011-09-30","val":-1309211,"accn":"0001193125-11-302486","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09","frame":"CY2011Q3I"},{"end":"2011-12-31","val":-1309926,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"end":"2011-12-31","val":-1309926,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011Q4I"},{"end":"2011-12-31","val":-1309926,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":-1309926,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":-1309926,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16"},{"end":"2011-12-31","val":-1309926,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2012-03-31","val":-1317376,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16","frame":"CY2012Q1I"},{"end":"2012-03-31","val":-1317376,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2012-06-30","val":36952,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":31738,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":-53020,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2012-12-31","val":-53020,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":-53020,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":-53020,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15"},{"end":"2012-12-31","val":-53020,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"end":"2013-03-31","val":-31725,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":-102547,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":-22233,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"}]}},"AcquisitionCosts":{"label":"Acquisition Costs, Period Cost","description":"The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.","units":{"USD":[{"start":"2011-01-01","end":"2011-09-30","val":370621,"accn":"0001193125-11-302486","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2011-07-01","end":"2011-09-30","val":370621,"accn":"0001193125-11-302486","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09","frame":"CY2011Q3"}]}},"AdditionalPaidInCapital":{"label":"Additional Paid in Capital","description":"Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. 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The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent 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Excludes employee stock ownership plan (ESOP).","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":978618,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2009"},{"start":"2010-01-01","end":"2010-12-31","val":513874,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":829006,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"start":"2011-01-01","end":"2011-12-31","val":829006,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":603612,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"start":"2012-01-01","end":"2012-12-31","val":603612,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":232760,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"start":"2013-01-01","end":"2013-12-31","val":232760,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":20576,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014"}]}},"StockIssuedDuringPeriodValueStockOptionsExercised":{"label":"Stock Issued During Period, Value, Stock Options Exercised","description":"Value of stock issued as a result of the exercise of stock options.","units":{"USD":[{"start":"2010-01-01","end":"2010-12-31","val":54137,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":29983,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"start":"2011-01-01","end":"2011-12-31","val":29983,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011"}]}},"TaxesPayableCurrent":{"label":"Taxes Payable, Current","description":"Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2014-06-30","val":700000,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":676444,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":652543,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014Q4I"}]}},"TemporaryEquityAccretionOfDividends":{"label":"Temporary Equity, Accretion of Dividends","description":"Value of accretion of temporary equity during the period due to unpaid dividends.","units":{"USD":[{"start":"2013-04-01","end":"2013-04-30","val":1075685,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q1I"},{"start":"2013-07-01","end":"2013-07-31","val":1367488,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q2I"},{"start":"2013-09-01","end":"2013-09-30","val":1277889,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q3I"},{"start":"2013-12-01","end":"2013-12-31","val":1574076,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"start":"2014-04-01","end":"2014-04-30","val":599875,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014Q1I"},{"start":"2014-06-01","end":"2014-06-30","val":552915,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014Q2I"},{"start":"2014-09-01","end":"2014-09-30","val":649937,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014Q3I"},{"start":"2014-12-01","end":"2014-12-31","val":503739,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014Q4I"}]}},"TemporaryEquityAccretionToRedemptionValue":{"label":"Temporary Equity, Accretion to Redemption Value","description":"Value of accretion of temporary equity to its redemption value during the period.","units":{"USD":[{"start":"2013-01-01","end":"2013-12-31","val":2257968,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":2964762,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2014"}]}},"TemporaryEquityAggregateAmountOfRedemptionRequirement":{"label":"Temporary Equity, Aggregate Amount of Redemption Requirement","description":"Aggregate amount of redemption requirements for each class or type of redeemable stock classified as temporary equity for each of the five years following the latest balance sheet date. 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Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. 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Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.","units":{"USD":[{"end":"2011-12-31","val":28482624,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":28482624,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":28482624,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011Q4I"},{"end":"2012-06-30","val":32178347,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":33283310,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":35851887,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"end":"2012-12-31","val":35851887,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15"},{"end":"2012-12-31","val":35851887,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":35851887,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":35851887,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2012-12-31","val":35851887,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2012Q4I"},{"end":"2013-03-31","val":36345424,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":37953945,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":41197933,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":43404993,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":43404993,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13"},{"end":"2013-12-31","val":43404993,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-12-31","val":43404993,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12"},{"end":"2013-12-31","val":43404993,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":44649612,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13","frame":"CY2014Q1I"},{"end":"2014-06-30","val":45907692,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":47330539,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":48676221,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":48676221,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30"},{"end":"2014-12-31","val":48676221,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2014Q4I"},{"end":"2015-03-31","val":50125262,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30","frame":"CY2015Q1I"},{"end":"2015-06-30","val":51709899,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2015Q2I"}]}},"TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests":{"label":"Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests","description":"Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.","units":{"USD":[{"end":"2014-12-31","val":72170150,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2014Q4I"},{"end":"2015-06-30","val":72170150,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2015Q2I"}]}},"TemporaryEquityParOrStatedValuePerShare":{"label":"Temporary Equity, Par or Stated Value Per Share","description":"Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.","units":{"USD/shares":[{"end":"2010-12-31","val":0.001,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010Q4I"},{"end":"2011-12-31","val":0.001,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"end":"2011-12-31","val":0.001,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2011-12-31","val":0.001,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16"},{"end":"2011-12-31","val":0.001,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":0.001,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":0.001,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":0.001,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2012-03-31","val":0.001,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16","frame":"CY2012Q1I"},{"end":"2012-06-30","val":0.001,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":0.001,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":0.001,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"end":"2012-12-31","val":0.001,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15"},{"end":"2012-12-31","val":0.001,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":0.001,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":0.001,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":0.001,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":0.001,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":0.001,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":0.001,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":0.001,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13"},{"end":"2013-12-31","val":0.001,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-12-31","val":0.001,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12"},{"end":"2013-12-31","val":0.001,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":0.001,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13","frame":"CY2014Q1I"},{"end":"2014-06-30","val":0.001,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":0.001,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":0.001,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":0.001,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30"},{"end":"2014-12-31","val":0.001,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13"},{"end":"2014-12-31","val":0.001,"accn":"0001104659-15-074918","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02","frame":"CY2014Q4I"},{"end":"2015-03-31","val":0.001,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30","frame":"CY2015Q1I"},{"end":"2015-06-30","val":0.001,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2015Q2I"},{"end":"2015-09-30","val":0.001,"accn":"0001104659-15-074918","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02","frame":"CY2015Q3I"}]}},"TemporaryEquityRedemptionValue":{"label":"Temporary Equity, Redemption Value (Deprecated 2014-01-31)","description":"The aggregate amount to be paid by the entity upon redemption of the security that is classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.","units":{"USD":[{"end":"2010-12-31","val":45495370,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010Q4I"},{"end":"2011-12-31","val":45495370,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"end":"2011-12-31","val":46916320,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2011-12-31","val":46916320,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16"},{"end":"2011-12-31","val":48381810,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":53058650,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":46916320,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2012-03-31","val":46916320,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16","frame":"CY2012Q1I"},{"end":"2012-06-30","val":48381810,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":49893090,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":53058650,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"end":"2012-12-31","val":53058650,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15"},{"end":"2012-12-31","val":53058650,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":58188070,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":60005710,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":53058650,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":53058650,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":58188070,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":60005710,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":61880320,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13"},{"end":"2013-12-31","val":63813590,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-12-31","val":63813590,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12"},{"end":"2013-12-31","val":67863340,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":61880320,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13","frame":"CY2014Q1I"},{"end":"2014-06-30","val":63813590,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":63813590,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":67863340,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":69983600,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30","frame":"CY2014Q4I"},{"end":"2015-03-31","val":69983600,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30","frame":"CY2015Q1I"}]}},"TemporaryEquitySharesAuthorized":{"label":"Temporary Equity, Shares Authorized","description":"The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.","units":{"shares":[{"end":"2010-12-31","val":7401832,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010Q4I"},{"end":"2011-12-31","val":7401832,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"end":"2011-12-31","val":7401832,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2011-12-31","val":7401832,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16"},{"end":"2011-12-31","val":7401832,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":7401832,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":7401832,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":7401832,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2012-03-31","val":7401832,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16","frame":"CY2012Q1I"},{"end":"2012-06-30","val":7401832,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":7401832,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":7401832,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"end":"2012-12-31","val":7401832,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15"},{"end":"2012-12-31","val":7401832,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":7401832,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":7401832,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":7401832,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":7401832,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":7401832,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":7401832,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":7401832,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13"},{"end":"2013-12-31","val":7401832,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-12-31","val":7401832,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12"},{"end":"2013-12-31","val":7401832,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":7401832,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13","frame":"CY2014Q1I"},{"end":"2014-06-30","val":7401832,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":7401832,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":7401832,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":7401832,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30"},{"end":"2014-12-31","val":7401832,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13"},{"end":"2014-12-31","val":7401832,"accn":"0001104659-15-074918","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02","frame":"CY2014Q4I"},{"end":"2015-03-31","val":7401832,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30","frame":"CY2015Q1I"},{"end":"2015-06-30","val":7401832,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2015Q2I"},{"end":"2015-09-30","val":7401832,"accn":"0001104659-15-074918","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02","frame":"CY2015Q3I"}]}},"TemporaryEquitySharesIssued":{"label":"Temporary Equity, Shares Issued","description":"The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.","units":{"shares":[{"end":"2010-12-31","val":4148538,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010Q4I"},{"end":"2011-12-31","val":4549537,"accn":"0001193125-12-140602","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"end":"2011-12-31","val":4549537,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2011-12-31","val":4549537,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16"},{"end":"2011-12-31","val":4549537,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":4549537,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":4549537,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28","frame":"CY2011Q4I"},{"end":"2012-03-31","val":4691632,"accn":"0001104659-12-037549","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-15"},{"end":"2012-03-31","val":4691632,"accn":"0001104659-12-037653","fy":2012,"fp":"Q1","form":"10-Q/A","filed":"2012-05-16","frame":"CY2012Q1I"},{"end":"2012-06-30","val":4838181,"accn":"0001104659-12-057446","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":4989309,"accn":"0001104659-12-076677","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":5305865,"accn":"0001104659-13-025414","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-28"},{"end":"2012-12-31","val":5305865,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15"},{"end":"2012-12-31","val":5305865,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":5305865,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":5305865,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":5305865,"accn":"0001104659-13-041982","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-15","frame":"CY2013Q1I"},{"end":"2013-06-30","val":5471610,"accn":"0001104659-13-063957","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":5818807,"accn":"0001104659-13-084495","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":6000571,"accn":"0001104659-14-024498","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":6188032,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13"},{"end":"2013-12-31","val":6000571,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-12-31","val":6000571,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12"},{"end":"2013-12-31","val":6000571,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17","frame":"CY2013Q4I"},{"end":"2014-03-31","val":6188032,"accn":"0001104659-14-038102","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-13","frame":"CY2014Q1I"},{"end":"2014-06-30","val":6381359,"accn":"0001104659-14-061058","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":6580726,"accn":"0001104659-14-079084","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-12","frame":"CY2014Q3I"},{"end":"2014-12-31","val":6786334,"accn":"0001104659-15-011382","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-17"},{"end":"2014-12-31","val":6786334,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30"},{"end":"2014-12-31","val":6786334,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13"},{"end":"2014-12-31","val":6786334,"accn":"0001104659-15-074918","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02","frame":"CY2014Q4I"},{"end":"2015-03-31","val":6998360,"accn":"0001104659-15-032683","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-30","frame":"CY2015Q1I"},{"end":"2015-06-30","val":7217015,"accn":"0001104659-15-059620","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-13","frame":"CY2015Q2I"},{"end":"2015-09-30","val":7217015,"accn":"0001104659-15-074918","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-02","frame":"CY2015Q3I"}]}},"TemporaryEquitySharesOutstanding":{"label":"Temporary Equity, Shares Outstanding","description":"The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. 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This stock has no voting rights and receives no 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