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Acquisitions and Divestitures - Gulf of Mexico Property Acquisitions - Final Valuation of Assets Acquired and Liabilities Assumed (Details) (Gulf of Mexico Properties, USD $)
In Thousands, unless otherwise specified
 0 Months Ended
Jun. 20, 2012
Gulf of Mexico Properties
  
Consideration paid  
Cash, net of purchase price adjustments $ 43,282us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= sd_GulfOfMexicoPropertiesMember
Fair value of identifiable assets acquired and liabilities assumed  
Proved developed and undeveloped properties 98,725sd_BusinessAcquisitionPurchasePriceAllocationOilAndNaturalGasProperties
/ us-gaap_BusinessAcquisitionAxis
= sd_GulfOfMexicoPropertiesMember
Asset retirement obligations (55,443)sd_BusinessAcquisitionPurchasePriceAllocationAssetRetirementObligations
/ us-gaap_BusinessAcquisitionAxis
= sd_GulfOfMexicoPropertiesMember
Total identifiable net assets $ 43,282us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= sd_GulfOfMexicoPropertiesMember