Consolidated Statements of Changes in Owners' Equity (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	Total Owners' Equity [Member]
Beginning Balance at Dec. 31, 2009		$ 414	$ 1,017,498	$ 0	$ (37,892)	$ (3,334)	$ 1,571	$ 978,257
Net income (loss)	(132,072)	0	0		(132,297)	0	225	(132,072)
Other comprehensive income (loss)	4,449	0	0		0	4,449	0	4,449
Distributions to noncontrolling interests		0	0		0	0	(277)	(277)
Non-cash equity compensation		0	6,230		0	0	0	6,230
Issuance of common stock under compensation plans		1	(1)		0	0	0	0
Deconsolidation of White Cliffs		0	0		0	0	(1,371)	(1,371)
Other		0	0		0	0	(148)	(148)
Ending Balance at Dec. 31, 2010		415	1,023,727	0	(170,189)	1,115	0	855,068
Net income (loss)	2,812	0	0		2,377	0	435	2,812
Other comprehensive income (loss)	(14,990)	0	0		0	(14,990)	0	(14,990)
Non-cash equity compensation		0	8,641		0	0	0	8,641
Issuance of common stock under compensation plans		3	(3)		0	0	0	0
Net proceeds from public offering of Rose Rock Midstream, L.P. interests		0	0		0	0	127,134	127,134
Ending Balance at Dec. 31, 2011	978,665	418	1,032,365	0	(167,812)	(13,875)	127,569	978,665
Net income (loss)	31,897				22,100		9,797	31,897
Other comprehensive income (loss)	12,576					12,576		12,576
Distributions to noncontrolling interests							(8,502)	(8,502)
Non-cash equity compensation			6,195				308	6,503
Warrants exercised			631					631
Issuance of common stock under compensation plans		2	(2)					0
Repurchase of common stock				(242)				(242)
Other					38		(38)	0
Ending Balance at Dec. 31, 2012	$ 1,021,528	$ 420	$ 1,039,189	$ (242)	$ (145,674)	$ (1,299)	$ 129,134	$ 1,021,528