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It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents.","units":{"USD":[{"end":"2013-12-31","val":1900000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2013Q4I"},{"end":"2014-12-31","val":18096000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2014-12-31","val":18096000,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2014Q4I"},{"end":"2015-12-31","val":1091000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2015-12-31","val":1091000,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2015Q4I"},{"end":"2016-12-31","val":3697000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2016-12-31","val":3697000,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2016Q4I"},{"end":"2017-12-31","val":15247000,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2017Q4I"}]}},"CashAndCashEquivalentsPeriodIncreaseDecrease":{"label":"Cash and Cash Equivalents, Period Increase (Decrease)","description":"Amount of increase (decrease) in cash and cash equivalents. 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to Acquire Oil and Gas Property","description":"The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.","units":{"USD":[{"start":"2012-01-01","end":"2012-12-31","val":178538000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":281004000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":281004000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2013"},{"start":"2014-09-08","end":"2014-09-09","val":120563000,"accn":"0001564590-14-005014","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"start":"2014-01-01","end":"2014-12-31","val":391422000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":391422000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2014-01-01","end":"2014-12-31","val":391422000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2014"},{"start":"2014-12-30","end":"2014-12-31","val":120563000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-12-30","end":"2014-12-31","val":120563000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2014Q4I"},{"start":"2015-01-01","end":"2015-12-31","val":221099000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":221099000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":48982000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2016"}]}},"PaymentsToAcquireProductiveAssets":{"label":"Payments to Acquire Productive Assets","description":"The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible 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For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).","units":{"MMcfe":[{"start":"2012-01-01","end":"2012-12-31","val":196583600,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":312461100,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":312461100,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":523764600,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":523764600,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2014-01-01","end":"2014-12-31","val":523764600,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":142986700,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":142986700,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":142986700,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":26427800,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2016-01-01","end":"2016-12-31","val":26427800,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":309571700,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2017"}]}},"ProvedDevelopedAndUndevelopedReserveImprovedRecoveryEnergy":{"label":"Proved Developed and Undeveloped Reserve, Improved Recovery (Energy)","description":"Energy measure of increase in quantity of proved reserve of oil and gas resulting from application of improved recovery techniques, 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":{"MMcfe":[{"start":"2012-01-01","end":"2012-12-31","val":4549800,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"}]}},"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":{"MMcfe":[{"end":"2011-12-31","val":366188300,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2011Q4I"},{"end":"2012-12-31","val":618050000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"end":"2012-12-31","val":618050000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2012Q4I"},{"end":"2013-12-31","val":849784600,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"end":"2013-12-31","val":849784600,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"end":"2013-12-31","val":849784600,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2013Q4I"},{"end":"2014-12-31","val":1336808300,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"end":"2014-12-31","val":1336808300,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"end":"2014-12-31","val":1336808300,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2014-12-31","val":1336808300,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2014Q4I"},{"end":"2015-12-31","val":680445000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"end":"2015-12-31","val":680445000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2015-12-31","val":680445000,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2015Q4I"},{"end":"2016-12-31","val":647783300,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"end":"2016-12-31","val":647783100,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2016Q4I"},{"end":"2017-12-31","val":1032886100,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","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":{"MMcfe":[{"start":"2012-01-01","end":"2012-12-31","val":24557300,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":33850200,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":33850200,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":56352200,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":56352200,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2014-01-01","end":"2014-12-31","val":56352200,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":71474800,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":71474800,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":71474800,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":71424900,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2016-01-01","end":"2016-12-31","val":71424900,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":68077400,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","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":{"MMcfe":[{"start":"2012-01-01","end":"2012-12-31","val":259200,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":6000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":6000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":24148300,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":24148300,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2014-01-01","end":"2014-12-31","val":24148300,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":24854900,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2015"}]}},"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":{"MMcfe":[{"start":"2012-01-01","end":"2012-12-31","val":75026400,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":-46882300,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2013-01-01","end":"2013-12-31","val":-46882300,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":-4537000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02"},{"start":"2014-01-01","end":"2014-12-31","val":-4537000,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2014-01-01","end":"2014-12-31","val":-4537000,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":-703020300,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":-703020300,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":-703020300,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":59144700,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2016-01-01","end":"2016-12-31","val":59144700,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":165172500,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2017"}]}},"ProvedDevelopedAndUndevelopedReservesNet":{"label":"Proved Developed and Undeveloped Reserves, Net","description":"The net quantity of proved reserves as of the balance sheet date. Proved oil reserves are the estimated quantities of crude oil and natural gas liquids which geological and engineering data demonstrate with reasonable certainty to be recoverable.","units":{"Mcf":[{"end":"2013-12-31","val":65500000,"accn":"0001193125-14-080312","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-03","frame":"CY2013Q4I"},{"end":"2014-12-31","val":2100000,"accn":"0001564590-15-001192","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2014Q4I"}]}},"ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy":{"label":"Proved Developed and Undeveloped Reserves, Sale of Mineral in Place (Energy)","description":"Energy measure of decrease in quantity of proved reserve of oil and gas resulting from sale 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":{"MMcfe":[{"start":"2015-01-01","end":"2015-12-31","val":24854900,"accn":"0001564590-16-014863","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-15"},{"start":"2015-01-01","end":"2015-12-31","val":24854900,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":46809300,"accn":"0001564590-17-004412","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-15"},{"start":"2016-01-01","end":"2016-12-31","val":46809500,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":21563800,"accn":"0001564590-18-008166","fy":2017,"fp":"FY","form":"10-K","filed":"2018-04-13","frame":"CY2017"}]}},"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 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