Estimated Fair Value of Derivative Contracts (Detail) (USD $)
In Thousands, unless otherwise specified |
Jun. 30, 2013
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Dec. 31, 2012
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Derivatives Fair Value [Line Items] | ||
Fair value of commodity derivative contracts | $ 2,856 | |
Fair value of commodity derivative contracts | 475 | |
Prepaid And Other Assets
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Derivatives Fair Value [Line Items] | ||
Fair value of commodity derivative contracts | 2,635 | |
Other Assets
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Derivatives Fair Value [Line Items] | ||
Fair value of commodity derivative contracts | 221 | |
Accrued Liabilities
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Derivatives Fair Value [Line Items] | ||
Fair value of commodity derivative contracts | 475 | 6,355 |
Other Liabilities Noncurrent
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Derivatives Fair Value [Line Items] | ||
Fair value of commodity derivative contracts | $ 3,046 |
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- Definition
Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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