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Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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| Deferred tax asset | ||
| Federal net operating loss carryforward | $ 86,629us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 70,365us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
| Statutory depletion carryforward | 8,876cpe_DeferredTaxAssetsStatutoryDepletionCarryforward | 8,880cpe_DeferredTaxAssetsStatutoryDepletionCarryforward |
| Alternative minimum tax credit carryforward | 208us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax | 208us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax |
| Asset retirement obligations | 1,003us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations | 1,024us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations |
| Other | 6,621us-gaap_DeferredTaxAssetsOther | 7,575us-gaap_DeferredTaxAssetsOther |
| Total deferred tax asset | 103,337us-gaap_DeferredTaxAssetsGross | 88,052us-gaap_DeferredTaxAssetsGross |
| Deferred tax liability | ||
| Oil and natural gas properties | 54,723us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | 26,412us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |
| Other | 10,140us-gaap_DeferredTaxLiabilitiesOther | 32us-gaap_DeferredTaxLiabilitiesOther |
| Total deferred tax liability | 64,863us-gaap_DeferredIncomeTaxLiabilities | 26,444us-gaap_DeferredIncomeTaxLiabilities |
| Net deferred tax asset | $ 38,474us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 61,608us-gaap_DeferredTaxAssetsLiabilitiesNet |
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- Definition
Deferred Tax Assets, Statutory Depletion Carryforward No definition available.
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from asset retirement obligations. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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