Federal, Foreign and State Current and Deferred Income Tax (Details) Components of Income Tax Expense (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current tax expense (benefit) [Abstract]
United States Federal and state	$ (941)	$ (4,138)	$ (2,539)
Foreign			1,045
Current income tax expense (benefit)	(941)	(4,138)	(1,494)
Deferred tax expense (benefit) [Abstract]
United States Federal and state	(128)	26,289	(11,023)
Foreign			(1)
Deferred income tax expense (benefit)	(128)	26,289	(11,024)
Total income tax provision (benefit)	$ (1,069)	$ 22,151	$ (12,518)