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Income Taxes - Narrative (Details) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2010
Income Taxes [Line Items] |  |  |  |
Valuation allowance | $ 649,592,000 us-gaap_DeferredTaxAssetsValuationAllowance | $ 753,451,000 us-gaap_DeferredTaxAssetsValuationAllowance | $ 557,300,000 us-gaap_DeferredTaxAssetsValuationAllowance |
Reversal of deferred tax asset valuation allowance | 0 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount | (3,842,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount | 100,288,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |
Alternative minimum tax credits, not subject to expiration | 9,300,000 us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax |  |  |
Federal net operating loss carryovers, subject to expiration | 3,400,000,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration |  |  | 929,400,000 us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
Unrecognized excess tax benefits from stock based compensation | 17,700,000 sd_UnrecognizedExcessTaxBenefitsFromStockBasedCompensation |  |  |
Unrecognized tax benefits | 77,000 us-gaap_UnrecognizedTaxBenefits | 1,382,000 us-gaap_UnrecognizedTaxBenefits | 1,330,000 us-gaap_UnrecognizedTaxBenefits |
Unrecognized tax benefits, accrued gross interest | (100,000)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | (100,000)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | 300,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense |
Unrecognized tax benefits, accrued liability |  | 100,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued |  |
Dynamic Acquisition |  |  |  |
Income Taxes [Line Items] |  |  |  |
Reversal of deferred tax asset valuation allowance |  |  | $ 100,300,000 us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount / us-gaap_BusinessAcquisitionAxis = sd_DynamicAcquisitionMember |
Minimum |  |  |  |
Income Taxes [Line Items] |  |  |  |
Number of tax years open for state tax audit (in years) | 3 years |  |  |
Maximum |  |  |  |
Income Taxes [Line Items] |  |  |  |
Number of tax years open for state tax audit (in years) | 5 years |  |  |
Earliest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Operating loss carryforwards expiration year | 2023 |  |  |
Latest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Operating loss carryforwards expiration year | 2034 |  |  |
Domestic Tax Authority | Earliest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Open tax year | 2011 |  |  |
Net Operating Loss And Other Carryforwards | Earliest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Open tax year | 2005 |  |  |
Net Operating Loss And Other Carryforwards | Latest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Open tax year | 2010 |  |  |

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