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v2.4.1.9

Income Taxes - Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | ---
Deferred tax liabilities |  |  |  |  |
Investments | $ 272,902 sd_DeferredTaxLiabilitiesEquityInvestments | [1] | $ 301,447 sd_DeferredTaxLiabilitiesEquityInvestments | [1] |
Property, plant and equipment | 364,576 us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |  | 180,140 us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment |  |
Derivative contracts | 113,735 us-gaap_DeferredTaxLiabilitiesDerivatives |  | 0 us-gaap_DeferredTaxLiabilitiesDerivatives |  |
Total deferred tax liabilities | 751,213 us-gaap_DeferredTaxLiabilities |  | 481,587 us-gaap_DeferredTaxLiabilities |  |
Deferred tax assets |  |  |  |  |
Derivative contracts | 0 us-gaap_DeferredTaxAssetsDerivativeInstruments |  | 3,692 us-gaap_DeferredTaxAssetsDerivativeInstruments |  |
Allowance for doubtful accounts | 19,086 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts |  | 20,358 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts |  |
Net operating loss carryforwards | 1,265,458 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |  | 973,675 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |  |
Compensation and benefits | 19,867 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits |  | 24,895 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits |  |
Alternative minimum tax credits and other carryforwards | 43,840 sd_DeferredTaxAssetsAlternativeMinimumTaxAndOtherCarryforwards |  | 46,624 sd_DeferredTaxAssetsAlternativeMinimumTaxAndOtherCarryforwards |  |
Asset retirement obligations | 21,946 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations |  | 147,626 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations |  |
CO2 under-delivery shortfall penalty | 27,674 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities |  | 15,012 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities |  |
Other | 2,934 us-gaap_DeferredTaxAssetsOther |  | 3,156 us-gaap_DeferredTaxAssetsOther |  |
Total deferred tax assets | 1,400,805 us-gaap_DeferredTaxAssetsGross |  | 1,235,038 us-gaap_DeferredTaxAssetsGross |  |
Valuation allowance | (649,592)us-gaap_DeferredTaxAssetsValuationAllowance |  | (753,451)us-gaap_DeferredTaxAssetsValuationAllowance |  | (557,300)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax liability | $ 0 us-gaap_DeferredTaxAssetsLiabilitiesNet |  | $ 0 us-gaap_DeferredTaxAssetsLiabilitiesNet |  |
[1] | Includes the Company’s deferred tax liability resulting from its investment in the Royalty Trusts. See Note 4 for further discussion of the Royalty Trusts.

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