Income Taxes Provision for Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
U.S. federal	$ (80,029)	$ (26,893)	$ 973
State	(4,569)	(624)	(12)
Foreign	(288)	(342)	(1,242)
Total Current	(84,886)	(27,859)	(281)
Deferred:
U.S. federal	(2,598)	(2,079)	(14,554)
State	(595)	(1,066)	(1,283)
Foreign	(55)	(32)	69
Total Deferred	(3,248)	(3,177)	(15,768)
Changes in valuation allowance	(257)	679	832
Total	$ (88,391)	$ (30,357)	$ (15,217)