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Business Segment Information - Major Customers (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
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 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
Plains Marketing, L.P. |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 597,117 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_PlainsMarketingLPMember | 491,258 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_PlainsMarketingLPMember | 426,339 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_PlainsMarketingLPMember
Percentage of revenue |  |  |  |  |  |  |  |  | 38.30%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_PlainsMarketingLPMember | 24.80%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_PlainsMarketingLPMember | 15.60%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_PlainsMarketingLPMember
Shell Trading (US) Company |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  |  | 347,422 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_ShellTradingUSCompanyMember |
Percentage of revenue |  |  |  |  |  |  |  |  |  | 17.50%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_ShellTradingUSCompanyMember |
Atlas Pipeline Mid-Continent West OK LLC |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 333,027 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_AtlasPipelineMidContinentWestOKLlcMemberMember | 211,838 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_AtlasPipelineMidContinentWestOKLlcMemberMember |
Percentage of revenue |  |  |  |  |  |  |  |  | 21.40%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_AtlasPipelineMidContinentWestOKLlcMemberMember | 10.70%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_AtlasPipelineMidContinentWestOKLlcMemberMember |
Enterprise Crude Oil, LLC |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  |  |  | $ 394,162 us-gaap_Revenues / us-gaap_MajorCustomersAxis = sd_EnterpriseCrudeOilLlcMember
Percentage of revenue |  |  |  |  |  |  |  |  |  |  | 14.40%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = sd_EnterpriseCrudeOilLlcMember

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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