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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":"2014-12-31","val":5561000,"accn":"0001193125-15-368305","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-05","frame":"CY2014Q4I"},{"end":"2015-09-30","val":5635000,"accn":"0001193125-15-368305","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-05","frame":"CY2015Q3I"}]}},"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":"2014-01-01","end":"2014-12-31","val":43247,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":34895,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"start":"2015-01-01","end":"2015-12-31","val":34895,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":16651,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"start":"2016-01-01","end":"2016-12-31","val":16651,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":33307,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017"}]}},"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":"2013-12-31","val":114661,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2013Q4I"},{"end":"2014-12-31","val":146248,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2014-12-31","val":146248,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2014Q4I"},{"end":"2015-12-31","val":166646,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2015-12-31","val":166646,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2015Q4I"},{"end":"2016-12-31","val":156377,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2016-12-31","val":156377,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2016Q4I"},{"end":"2017-12-31","val":181545,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017Q4I"}]}},"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":-2888,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-3517,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26"},{"start":"2013-01-01","end":"2013-12-31","val":3517,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-5281,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26"},{"start":"2014-01-01","end":"2014-12-31","val":5281,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04"},{"start":"2014-01-01","end":"2014-12-31","val":5281,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":5787,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04"},{"start":"2015-01-01","end":"2015-12-31","val":5787,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"start":"2015-01-01","end":"2015-12-31","val":5787,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":4759,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"start":"2016-01-01","end":"2016-12-31","val":4759,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":4452,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017"}]}},"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":"2013-01-01","end":"2013-12-31","val":109,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26"},{"start":"2013-01-01","end":"2013-12-31","val":109,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04","frame":"CY2013"},{"start":"2017-01-01","end":"2017-12-31","val":1572,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017"}]}},"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":-17469,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-4692,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26"},{"start":"2013-01-01","end":"2013-12-31","val":-4692,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-6379,"accn":"0001193125-15-065808","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-26"},{"start":"2014-01-01","end":"2014-12-31","val":-6379,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04"},{"start":"2014-01-01","end":"2014-12-31","val":-6379,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":-8710,"accn":"0001193125-16-493387","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-04"},{"start":"2015-01-01","end":"2015-12-31","val":-8710,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"start":"2015-01-01","end":"2015-12-31","val":-8710,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":-22161,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"start":"2016-01-01","end":"2016-12-31","val":-22161,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":-5259,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017"}]}},"ProvedDevelopedAndUndevelopedReservesProduction":{"label":"Proved Developed and Undeveloped Reserves, Production","description":"Production of proved 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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":"2013-12-31","val":45189,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2013Q4I"},{"end":"2014-12-31","val":60220,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2014-12-31","val":60220,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2014Q4I"},{"end":"2015-12-31","val":61856,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2015-12-31","val":61856,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2015Q4I"},{"end":"2016-12-31","val":58875,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2016-12-31","val":58875,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2016Q4I"},{"end":"2017-12-31","val":66399,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017Q4I"}]}},"ProvedOilAndGasPropertySuccessfulEffortMethod":{"label":"Proved 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gas.","units":{"MBoe":[{"end":"2013-12-31","val":69472,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10","frame":"CY2013Q4I"},{"end":"2014-12-31","val":86028,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2014-12-31","val":86028,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2014Q4I"},{"end":"2015-12-31","val":104790,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2015-12-31","val":104790,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2015Q4I"},{"end":"2016-12-31","val":97502,"accn":"0001564590-17-003985","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-10"},{"end":"2016-12-31","val":97502,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2016Q4I"},{"end":"2017-12-31","val":115146,"accn":"0001564590-18-005124","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-09","frame":"CY2017Q4I"}]}},"ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax":{"label":"Reclassification 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-Q","filed":"2019-05-10","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":29000,"accn":"0001564590-19-031264","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2019-01-01","end":"2019-09-30","val":29000,"accn":"0001564590-19-043769","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-18"}]}},"StockIssuedDuringPeriodValueStockOptionsExercised":{"label":"Stock 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