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Fair Value Measurements - Narrative (Details) (Gulf Properties)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Gulf Properties
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair value inputs, probability of default	3.59%us-gaap_FairValueInputsProbabilityOfDefault / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember	3.71%us-gaap_FairValueInputsProbabilityOfDefault / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember

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- Definition

Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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