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Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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 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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":{"MBoe":[{"start":"2015-01-01","end":"2015-12-31","val":3405,"accn":"0001527709-16-000075","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-29"},{"start":"2015-01-01","end":"2015-12-31","val":3405,"accn":"0001527709-17-000019","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-28","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":1246,"accn":"0001527709-17-000019","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-28"},{"start":"2016-01-01","end":"2016-12-31","val":1246,"accn":"0001564590-18-003806","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":1074,"accn":"0001564590-18-003806","fy":2017,"fp":"FY","form":"10-K","filed":"2018-02-28","frame":"CY2017"}]}},"ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions":{"label":"Proved Developed and Undeveloped Reserves, Extensions, Discoveries, and Additions","description":"Additions to proved reserves that result from (1) extension of the proved acreage of previously discovered (old) reservoirs through additional drilling in periods after discovery and (2) discovery of new fields with proved reserves or of new reservoirs of proved reserves in old fields.","units":{"MBbls":[{"start":"2010-01-01","end":"2010-12-31","val":765,"accn":"0001193125-13-093913","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":1704,"accn":"0001193125-13-093913","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06"},{"start":"2011-01-01","end":"2011-12-31","val":1704,"accn":"0001527709-14-000018","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":1572,"accn":"0001193125-13-093913","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06"},{"start":"2012-01-01","end":"2012-12-31","val":1572,"accn":"0001527709-14-000018","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05"},{"start":"2012-01-01","end":"2012-12-31","val":1572,"accn":"0001527709-15-000015","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-03","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":76,"accn":"0001527709-14-000018","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05"},{"start":"2013-01-01","end":"2013-12-31","val":76,"accn":"0001527709-15-000015","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-03"},{"start":"2013-01-01","end":"2013-12-31","val":76,"accn":"0001527709-16-000075","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-29","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":1241,"accn":"0001527709-15-000015","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-03"},{"start":"2014-01-01","end":"2014-12-31","val":1241,"accn":"0001527709-16-000075","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-29","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001527709-16-000075","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-29","frame":"CY2015"}]}},"ProvedDevelopedAndUndevelopedReservesNet":{"label":"Proved Developed and Undeveloped Reserves, Net","description":"The net quantity of proved reserves as of the balance sheet date. 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Quantities of reserves relating to royalty interests owned are included in \"net\" quantities if the necessary information is available to the enterprise. \"Net\" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as \"barrels\" for oil and synthetic oil reserves or \"cubic feet\" or \"cubic meters\" for natural gas and synthetic gas 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Quantities of reserves relating to royalty interests owned are included in \"net\" quantities if the necessary information is available to the enterprise. \"Net\" quantities does not include reserves relating to interests of others in properties owned by the enterprise. 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