Income Taxes Schedule of Income Tax Expense (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
Federal	$ 1,050	$ (7,138)	$ 634
State	280	3,082	901
Foreign	1,652	278	(861)
Current Income Tax Expense (Benefit)	2,982	(3,778)	674
Deferred:
Federal	(12,625)	13,974	(66,408)
State	4,158	219	(8,374)
Foreign	(220)	407	(200)
Deferred Income Tax (Benefit) Expense	(8,687)	14,600	(74,982)
Net income tax (benefit) expense	$ (5,705)	$ 10,822	$ (74,308)