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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from state taxes.

+ References

No definition available.

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of oil and gas property or timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Selected Quarterly Financial Data (Unaudited) - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Selected Quarterly Financial Information [Line Items]
General and administrative	$ 60,207,000	$ 44,919,000	$ 101,987,000	$ 84,058,000	$ 46,582,000	$ 44,497,000	$ 44,005,000	$ 38,729,000	$ 291,171,000	$ 173,813,000	$ 151,191,000
Gain on the sale of assets	3,162,000	6,008,000	83,287,000	(166,000)	61,836,000	949,000	(3,227,000)	(10,426,000)	92,291,000	49,132,000	2,259,000
State apportionment rate adjustments	21,200,000								21,200,000
Drummond Legal Settlement
Selected Quarterly Financial Information [Line Items]
General and administrative			52,500,000	35,000,000
Deleware and Permian Basin Properties
Selected Quarterly Financial Information [Line Items]
Gain on the sale of assets			$ 79,400,000