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Derivatives - Offsetting Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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ASSETS |  |
Derivative assets, gross amounts | $ 338,417 us-gaap_DerivativeFairValueOfDerivativeAsset | $ 50,274 us-gaap_DerivativeFairValueOfDerivativeAsset
Derivative assets, gross amounts offset | 0 us-gaap_DerivativeAssetFairValueGrossLiability | (23,369)us-gaap_DerivativeAssetFairValueGrossLiability
Derivative assets, current | 291,414 us-gaap_DerivativeAssetsCurrent | 12,779 us-gaap_DerivativeAssetsCurrent
Derivative assets, noncurrent | 47,003 us-gaap_DerivativeAssetsNoncurrent | 14,126 us-gaap_DerivativeAssetsNoncurrent
Derivative assets, amounts net of offset | 338,417 us-gaap_DerivativeAssets | 26,905 us-gaap_DerivativeAssets
Derivative assets, financial collateral | 0 us-gaap_DerivativeCollateralObligationToReturnSecurities | 0 us-gaap_DerivativeCollateralObligationToReturnSecurities
Derivative assets, net amount | 338,417 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral | 26,905 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral
LIABILITIES |  |
Derivative liabilities, gross amounts | 0 us-gaap_DerivativeFairValueOfDerivativeLiability | 78,200 us-gaap_DerivativeFairValueOfDerivativeLiability
Derivative liabilities, gross amounts offset | 0 us-gaap_DerivativeLiabilityFairValueGrossAsset | (23,369)us-gaap_DerivativeLiabilityFairValueGrossAsset
Derivative liabilities, current | 0 us-gaap_DerivativeLiabilitiesCurrent | 34,267 us-gaap_DerivativeLiabilitiesCurrent
Derivative liabilities, noncurrent | 0 us-gaap_DerivativeLiabilitiesNoncurrent | 20,564 us-gaap_DerivativeLiabilitiesNoncurrent
Derivative liabilities, amount net of offset | 0 us-gaap_DerivativeLiabilities | 54,831 us-gaap_DerivativeLiabilities
Derivative liabilities, financial collateral | 0 us-gaap_DerivativeCollateralRightToReclaimSecurities | (54,831)us-gaap_DerivativeCollateralRightToReclaimSecurities
Derivative liabilities, net amount | 0 us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral | 0 us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral
Current assets |  |
ASSETS |  |
Derivative assets, gross amounts | 291,414 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember | 18,368 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember
Derivative assets, gross amounts offset | 0 us-gaap_DerivativeAssetFairValueGrossLiability / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember | (5,589)us-gaap_DerivativeAssetFairValueGrossLiability / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember
Derivative assets, financial collateral | 0 us-gaap_DerivativeCollateralObligationToReturnSecurities / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember | 0 us-gaap_DerivativeCollateralObligationToReturnSecurities / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember
Derivative assets, net amount | 291,414 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember | 12,779 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_CurrentAssetsMember
Noncurrent assets |  |
ASSETS |  |
Derivative assets, gross amounts | 47,003 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember | 31,906 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember
Derivative assets, gross amounts offset | 0 us-gaap_DerivativeAssetFairValueGrossLiability / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember | (17,780)us-gaap_DerivativeAssetFairValueGrossLiability / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember
Derivative assets, financial collateral | 0 us-gaap_DerivativeCollateralObligationToReturnSecurities / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember | 0 us-gaap_DerivativeCollateralObligationToReturnSecurities / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember
Derivative assets, net amount | 47,003 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember | 14,126 us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentAssetsMember
Current liabilities |  |
LIABILITIES |  |
Derivative liabilities, gross amounts | 0 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember | 39,856 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember
Derivative liabilities, gross amounts offset | 0 us-gaap_DerivativeLiabilityFairValueGrossAsset / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember | (5,589)us-gaap_DerivativeLiabilityFairValueGrossAsset / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember
Derivative liabilities, financial collateral | 0 us-gaap_DerivativeCollateralRightToReclaimSecurities / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember | (34,267)us-gaap_DerivativeCollateralRightToReclaimSecurities / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember
Derivative liabilities, net amount | 0 us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember | 0 us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_CurrentLiabilitiesMember
Noncurrent liabilities |  |
LIABILITIES |  |
Derivative liabilities, gross amounts | 0 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember | 38,344 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember
Derivative liabilities, gross amounts offset | 0 us-gaap_DerivativeLiabilityFairValueGrossAsset / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember | (17,780)us-gaap_DerivativeLiabilityFairValueGrossAsset / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember
Derivative liabilities, financial collateral | 0 us-gaap_DerivativeCollateralRightToReclaimSecurities / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember | (20,564)us-gaap_DerivativeCollateralRightToReclaimSecurities / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember
Derivative liabilities, net amount | $ 0 us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember | $ 0 us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral / us-gaap_BalanceSheetLocationAxis = sd_NoncurrentLiabilitiesMember

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- Definition Amount of obligation to return securities collateral under master netting arrangements that have not been offset against derivative assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226016-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 + Details
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