Income Taxes Schedule of Components of Income Tax Expense (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Current
U.S. federal	$ (83,119)		$ (76,381)	$ (27,224)
State	(4,315)		(4,569)	(624)
Foreign	(400)		(288)	(342)
Total Current	(87,834)		(81,238)	(28,190)
Deferred
U.S. federal	39,567		(2,598)	(2,079)
State	18,320		(595)	(1,066)
Foreign	(5,119)		(55)	(32)
Total Deferred	52,768		(3,248)	(3,177)
Changes in valuation allowance	(14,595)	[1]	(257)	679
Total	$ (49,661)		$ (84,743)	$ (30,688)

[1] The increase in the valuation allowance during 2013 was primarily related to Georgia investment tax credits earned on the CSE project, the majority of which are fully reserved.