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Asset Retirement Obligations - Additional Information (Detail) (USD $)
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12 Months Ended | ||
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Dec. 31, 2013
Well
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Dec. 31, 2012
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Dec. 31, 2011
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| Asset Retirement Obligations (Textual) [Abstract] | |||
| Number of wells | 2 | ||
| Revisions | $ 0 | $ (5,744,000) | $ (7,000) |
| Abandoned Period Of Material Assets | P5Y | ||
| Abandonment cost related to annual funding | $ 10,100,000 | ||
| X | ||||||||||
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- Definition
Abandonment cost related to annual funding. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Number of wells. No definition available.
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- Definition
Amount of the Increase or Decrease in the amount of the asset retirement obligation during the current period for changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The timing in which the entity expects to abandon the long-lived asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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