CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	COMMON STOCK	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE INCOME
STOCKHOLDERS' EQUITY BALANCE at Dec. 31, 2009	$ 581,862	$ 43,845	$ 534,906	$ 3,111
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(85,139)		(85,139)
Other comprehensive loss, net of tax	(1,244)			(1,244)
Common stock dividends (per share $0.12)	(5,381)		(5,381)
Stock-based compensation	9,758	343	9,415
TOTAL EQUITY BALANCE at Dec. 31, 2010	561,662
STOCKHOLDERS' EQUITY BALANCE at Dec. 31, 2010	499,856	44,188	453,801	1,867
NONCONTROLLING INTEREST at Dec. 31, 2010	61,806
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(50,750)		(50,750)
Other comprehensive loss, net of tax	(1,703)			(1,703)
Common stock dividends (per share $0.12)	(5,410)		(5,410)
Stock-based compensation	7,694	226	7,468
TOTAL EQUITY BALANCE at Dec. 31, 2011	483,910
STOCKHOLDERS' EQUITY BALANCE at Dec. 31, 2011	449,687	44,414	405,109	164
NONCONTROLLING INTEREST at Dec. 31, 2011	34,223
Increase (Decrease) in Stockholders' Equity
Net (loss) income	40,382		40,382
Other comprehensive loss, net of tax	(72)			(72)
Common stock dividends (per share $0.12)	(5,479)		(5,479)
Stock-based compensation	19,418	761	18,657
TOTAL EQUITY BALANCE at Dec. 31, 2012	525,760
STOCKHOLDERS' EQUITY BALANCE at Dec. 31, 2012	503,936	45,175	458,669	92
NONCONTROLLING INTEREST at Dec. 31, 2012	$ 21,824