Schedule of Components of Income Tax Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current
Federal	$ (22,418)	$ 18,721
Foreign	8,994	0
State	(4,197)	6,952
Total current	(17,621)	25,673
Deferred
Federal	(20,786)	3,687
Foreign	(11,777)	0
State	(3,891)	(784)
Total deferred	(36,454)	2,903
Total tax provision	$ (54,075)	$ 28,576	$ 0