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Acquisitions and Divestitures - Gulf Properties Disposal - Revenue and Expense Information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Business Acquisitions And Dispositions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 346,881 us-gaap_Revenues | $ 394,107 us-gaap_Revenues | $ 374,714 us-gaap_Revenues | $ 443,056 us-gaap_Revenues | $ 465,108 us-gaap_Revenues | $ 493,603 us-gaap_Revenues | $ 512,987 us-gaap_Revenues | $ 511,690 us-gaap_Revenues | $ 1,558,758 us-gaap_Revenues |  | $ 1,983,388 us-gaap_Revenues | $ 1,934,642 us-gaap_Revenues
Expenses |  |  |  |  |  |  |  |  | 968,534 us-gaap_CostsAndExpenses |  | 2,152,389 us-gaap_CostsAndExpenses | 1,609,446 us-gaap_CostsAndExpenses
Gulf Properties |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisitions And Dispositions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 90,920 us-gaap_Revenues / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember | [1] | 627,236 us-gaap_Revenues / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember | 449,420 us-gaap_Revenues / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember
Expenses |  |  |  |  |  |  |  |  | $ 63,674 us-gaap_CostsAndExpenses / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember | [1] | $ 491,991 us-gaap_CostsAndExpenses / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember | $ 360,209 us-gaap_CostsAndExpenses / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = sd_GulfPropertiesMember
[1] | Includes revenues and expenses through February 25, 2014, the date of the sale.

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