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Derivatives - Fair Value of Derivative Contracts (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Derivatives, Fair Value    
Derivative assets $ 251,690us-gaap_DerivativeFairValueOfDerivativeAsset $ 338,417us-gaap_DerivativeFairValueOfDerivativeAsset
Derivative liabilities (403)us-gaap_DerivativeFairValueOfDerivativeLiability 0us-gaap_DerivativeFairValueOfDerivativeLiability
Total net derivative contracts 251,287us-gaap_DerivativeFairValueOfDerivativeNet 338,417us-gaap_DerivativeFairValueOfDerivativeNet
Current assets    
Derivatives, Fair Value    
Derivative assets 209,343us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
291,414us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
Noncurrent assets    
Derivatives, Fair Value    
Derivative assets 42,347us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
47,003us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
Current liabilities    
Derivatives, Fair Value    
Derivative liabilities (403)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentLiabilitiesMember
0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentLiabilitiesMember
Oil Price Swaps | Current assets    
Derivatives, Fair Value    
Derivative assets 145,304us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_CrudeOilPriceSwapMember
204,072us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_CrudeOilPriceSwapMember
Oil Price Swaps | Noncurrent assets    
Derivatives, Fair Value    
Derivative assets 32,193us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_CrudeOilPriceSwapMember
36,288us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_CrudeOilPriceSwapMember
Natural Gas Price Swaps | Current assets    
Derivatives, Fair Value    
Derivative assets 7,762us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasPriceSwapMember
29,648us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasPriceSwapMember
Natural Gas Basis Swaps | Current assets    
Derivatives, Fair Value    
Derivative assets 1,452us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasBasisSwapMember
350us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasBasisSwapMember
Natural Gas Basis Swaps | Noncurrent assets    
Derivatives, Fair Value    
Derivative assets 283us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasBasisSwapMember
0us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasBasisSwapMember
Natural Gas Basis Swaps | Current liabilities    
Derivatives, Fair Value    
Derivative liabilities (403)us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasBasisSwapMember
0us-gaap_DerivativeFairValueOfDerivativeLiability
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasBasisSwapMember
Oil Collars - Three Way | Current assets    
Derivatives, Fair Value    
Derivative assets 53,890us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_OilCollarsThreeWayMember
56,289us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_OilCollarsThreeWayMember
Oil Collars - Three Way | Noncurrent assets    
Derivatives, Fair Value    
Derivative assets 9,871us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_OilCollarsThreeWayMember
10,715us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_NoncurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_OilCollarsThreeWayMember
Natural Gas Collars | Current assets    
Derivatives, Fair Value    
Derivative assets $ 935us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasCollarsMember
$ 1,055us-gaap_DerivativeFairValueOfDerivativeAsset
/ us-gaap_BalanceSheetLocationAxis
= sd_CurrentAssetsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= sd_NaturalGasCollarsMember