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
	Dec. 31, 2012
Gulf of Mexico Properties
Business Acquisition [Line Items]
Revenues	$ 1,963,058
Net income	247,035
Income available to SandRidge Energy, Inc. common stockholders	$ 86,510
Earnings per common share
Basic (in dollars per share)	$ 0.19
Diluted (in dollars per share)	$ 0.19