v3.3.1.900

Disclosures About Oil and Gas Producing Activities - Summary of Changes in Quantities of Proved Oil, NGL and Natural Gas Reserves (Parenthetical) (Detail) | 12 Months Ended
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Dec. 31, 2015 MBoe MBbls MMcf | Dec. 31, 2014 MBoe MBbls MMcf | Dec. 31, 2013 MBoe MBbls MMcf
Reserve Quantities [Line Items] |  |  |
Beginning Balance, Proved Developed Reserves, MBoe | MBoe | 60,220 | 45,189 | 32,774
Ending Balance, Proved Developed Reserves, MBoe | MBoe | 61,856 | 60,220 | 45,189
Beginning Balance, Proved Undeveloped Reserves, MBoe | MBoe | 86,028 | 69,472 | 62,705
Ending Balance, Proved undeveloped Reserves, MBoe | MBoe | 104,790 | 86,028 | 69,472
Field fuel | MMcf | 1,530 | 1,390 | 560
Natural Gas (MMcf) [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Beginning Balance, Proved Developed Reserve, MMcf | MMcf | 138,961 | 99,742 | 73,178
Ending Balance, Proved Developed Reserve, MMcf | MMcf | 154,652 | 138,961 | 99,742
Beginning Balance, Proved Undeveloped Reserves, MMcf | MMcf | 161,059 | 116,260 | 101,582
Ending Balance, Proved Undeveloped Reserves, MMcf | MMcf | 221,335 | 161,059 | 116,260
Field fuel | MMcf | 13,262 | 10,773 | 6,737
NGLs (MBbls) [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Beginning Balance, Proved Developed Reserves, MBbls | 19,082 | 14,919 | 11,761
Ending Balance, Proved Developed Reserves, MBbls | 20,414 | 19,082 | 14,919
Beginning Balance, Proved Undeveloped Reserves, MBbls | 21,825 | 17,674 | 17,339
Ending Balance, Proved Undeveloped Reserves, MBbls | 29,072 | 21,825 | 17,674
Field fuel | 1,694 | 1,461 | 951
Oil (MBbls) [Member] |  |  |
Reserve Quantities [Line Items] |  |  |
Beginning Balance, Proved Developed Oil Reserves, MBbls | 17,978 | 13,646 | 8,816
Ending Balance, Proved Developed Oil Reserves, MBbls | 15,667 | 17,978 | 13,646
Beginning Balance, Proved Undeveloped Oil Reserves, MBbls | 37,360 | 32,421 | 28,436
Ending Balance, Proved Undeveloped Oil Reserves, MBbls | 38,829 | 37,360 | 32,421
Field fuel | 1,882 | 2,024 | 1,444

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- Definition Net quantities of an enterprise's interests in proved developed reserves of crude oil. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. 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. + References No definition available. + Details
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- Definition Net quantities of an enterprise's interests in proved developed reserves of natural gas."Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties.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 "cubic feet" or "cubic meters" for natural gas. + References No definition available. + Details
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- Definition Net quantities of an enterprise's interests in proved developed reserves of natural gas liquids. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. 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 gas liquids. + References No definition available. + Details
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- Definition Production of proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 5 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e61831-109447 + Details
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