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Acquisitions and Divestitures - Arena Acquisition - Unaudited Pro Forma Results of Operations (Details) (Arena Acquisition, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2010
Arena Acquisition
Business Acquisition [Line Items]
Revenues	$ 1,046,569
Income available to SandRidge Energy, Inc. common stockholders	$ 171,654	[1]
Earnings per common share
Basic (in dollars per share)	$ 0.44
Diluted (in dollars per share)	$ 0.43
[1] Includes a $454.5 million reduction in tax expense related to the release of a portion of the Company’s valuation allowance on existing deferred tax assets.

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