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Acquisitions and Divestitures - Dynamic Acquisition - Unaudited Pro Forma Results of Operations (Details) (Dynamic Acquisition, USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Dynamic Acquisition |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenues | $ 2,908,899 | [1] | $ 1,932,945 | [2]
Net income | 39,563 | [1] | 509,644 | [2]
(Loss applicable) income available to SandRidge Energy, Inc. common stockholders | $ (120,962) | [1] | $ 399,278 | [2]
(Loss) earnings per common share |  |  |  |
Basic (in dollars per share) | $ (0.25) | [1] | $ 0.84 | [2]
Diluted (in dollars per share) | $ (0.25) | [1] | $ 0.80 | [2]
[1] | Pro forma net income, income available to SandRidge Energy, Inc. common stockholders and earnings per common share exclude a $122.7 million bargain purchase gain, a $100.3 million partial valuation allowance release included in income tax benefit, $10.9 million of fees incurred to secure financing for the Dynamic Acquisition included in interest expense and $13.0 million of transaction costs incurred and included in general and administrative expense in the accompanying consolidated statements of operations for the year ended December 31, 2012.
[2] | Pro forma net income, income applicable to SandRidge Energy, Inc. common stockholders and earnings per common share include a $122.7 million bargain purchase gain, a $100.3 million partial valuation allowance release, $10.9 million of fees incurred to secure financing for the Dynamic Acquisition and $13.0 million of estimated transaction costs.

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