Increase (Decrease) in Estimated Proved Reserves, Percent

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- Definition

Proved Developed and Undeveloped Reserves, Company Drilling Success Rate

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- Definition

Proved Developed and Undeveloped Reserves, Extensions, Discoveries and Additions, Equivalent

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- Definition

Proved Developed and Undeveloped Reserves, Gross Wells Drilled

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- Definition

Proved Developed and Undeveloped Reserves, Increases (Decreases)

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- Definition

The average consolidated production costs (lifting costs) per unit of production. Costs may include costs incurred to operate and maintain wells and equipment and to pay production taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1204
-Paragraph (b)
-Subparagraph (2)

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- Definition

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.

+ 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 (d)
-URI http://asc.fasb.org/extlink&oid=51678428&loc=d3e61831-109447

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Supplementary Information on Oil and Gas Operations—Unaudited - Average Price and Text (Details) Mcfe in Thousands, MMcf in Thousands, MBbls in Thousands	12 Months Ended
	Dec. 31, 2015 Mcfe Wells $ / mcf $ / bbl $ / Mcfe MBbls MMcf	Dec. 31, 2014 Mcfe Wells $ / mcf $ / bbl $ / Mcfe MBbls MMcf	Dec. 31, 2013 Mcfe $ / mcf $ / bbl $ / Mcfe MBbls MMcf	Dec. 31, 2012 $ / mcf
Reserve Quantities [Line Items]
Company drilling success rate	95.00%	91.00%
Gross wells drilled \| Wells	56	58
Oklahoma
Reserve Quantities [Line Items]
Proved developed and undeveloped reserves, increases (decreases)	17,000	72,000	23,000
Texas
Reserve Quantities [Line Items]
Proved developed and undeveloped reserves, increases (decreases)	44,000	46,000	10,000
Gulf Coast
Reserve Quantities [Line Items]
Proved developed and undeveloped reserves, increases (decreases)		15,000	5,000
Oil
Reserve Quantities [Line Items]
Number of Bcfe additions \| MBbls	163	475	434
Consolidated oil and gas production costs per unit of production \| $ / bbl	50.29	96.45	106.19
Natural Gas Liquids
Reserve Quantities [Line Items]
Extensions, discoveries and other additions of Bcfe	16,078	49,990	6,099
Consolidated oil and gas production costs per unit of production \| $ / Mcfe	2.24	4.11	5.10
Oil and Natural Gas Reserves
Reserve Quantities [Line Items]
Increase in proved developed and undeveloped reserves	(55.00%)	33.84053%
Extensions, discoveries and other additions of Bcfe	62,702	135,205	39,132
Natural Gas
Reserve Quantities [Line Items]
Number of Bcfe additions \| MMcf	45,645	82,364	30,429
Consolidated oil and gas production costs per unit of production \| $ / mcf	2.41	3.80	3.11	2.20
Gulf of Mexico Acquisition
Reserve Quantities [Line Items]
Proved developed and undeveloped reserves, increases (decreases)			35,000