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Acquisitions and Divestitures - Gulf of Mexico Property Acquisitions - Unaudited Pro Forma Results of Operations (Details) (Gulf of Mexico Properties, USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Gulf of Mexico Properties |  |
Business Acquisition [Line Items] |  |
Revenues | $ 2,759,381 | $ 1,502,325
Net income | 248,920 | 191,335
Income available to SandRidge Energy, Inc. common stockholders | $ 88,395 | $ 81,429
Earnings per common share |  |
Basic (in dollars per share) | $ 0.19 | $ 0.20
Diluted (in dollars per share) | $ 0.19 | $ 0.20

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