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Variable Interest Entities - Royalty Trusts - Initial Public Offering (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2011 | Aug. 31, 2011 | Apr. 30, 2012 | Mar. 31, 2014 | Dec. 31, 2013
Mississippian Trust I |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |
Net proceeds of offering (in thousands) | $ 336,893 us-gaap_ProceedsFromIssuanceInitialPublicOffering / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIMember |  |  |  |  |  |  |
Total outstanding common units (in shares) | 21,000,000 sd_RoyaltyTrustCommonUnits / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIMember |  |  |  |  |  |  |
Total outstanding subordinated units (in shares) | 7,000,000 sd_RoyaltyTrustSubordinatedUnits / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIMember |  |  |  |  |  |  |
Beneficial interest owned by Company(1) | 38.40%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIMember | [1] |  |  |  |  | 26.90%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIMember | 26.90%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIMember
Liquidation date(2) | Dec. 31, 2030 | [2] |  |  |  |  |  |
Permian Trust |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |
Net proceeds of offering (in thousands) |  |  | 580,635 us-gaap_ProceedsFromIssuanceInitialPublicOffering / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgePermianTrustMember |  |  |  |  |
Total outstanding common units (in shares) |  |  | 39,375,000 sd_RoyaltyTrustCommonUnits / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgePermianTrustMember |  |  |  |  |
Total outstanding subordinated units (in shares) |  |  | 13,125,000 sd_RoyaltyTrustSubordinatedUnits / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgePermianTrustMember |  |  |  |  |
Beneficial interest owned by Company(1) |  |  | 34.30%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgePermianTrustMember | [1] |  |  | 25.00%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgePermianTrustMember | 28.50%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgePermianTrustMember
Liquidation date(2) |  |  | Mar. 31, 2031 | [2] |  |  |  |
Mississippian Trust II |  |  |  |  |  |  |  |
Variable Interest Entity |  |  |  |  |  |  |  |
Net proceeds of offering (in thousands) |  |  |  |  | $ 587,087 us-gaap_ProceedsFromIssuanceInitialPublicOffering / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIiMember |  |  |
Total outstanding common units (in shares) |  |  |  |  | 37,293,750 sd_RoyaltyTrustCommonUnits / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIiMember |  |  |
Total outstanding subordinated units (in shares) |  |  |  |  | 12,431,250 sd_RoyaltyTrustSubordinatedUnits / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIiMember |  |  |
Beneficial interest owned by Company(1) |  |  |  |  | 39.90%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIiMember | [1] | 37.60%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIiMember | 37.60%sd_VariableInterestEntityOwnershipInterestsPercentage / us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis = sd_SandRidgeMississippianTrustIiMember
Liquidation date(2) |  |  |  |  | Dec. 31, 2031 | [2] |  |
[1] | Subsequent to the initial public offerings, the Company sold common units of the Royalty Trusts it owned in transactions exempt from registration under Rule 144 under the Securities Act. These transactions decreased the Company’s beneficial interests in the Royalty Trusts. See further discussion of the unit sales below.
[2] | At the time each Royalty Trust terminates, 50% of the royalty interests conveyed to the Royalty Trust will automatically revert to the Company, and the remaining 50% will be sold with the proceeds distributed to the Royalty Trust unitholders.

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