Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current tax expense (benefit)
Federal	$ 3,554	$ 21,376	$ 613
State	45	564	13
Continuing operations	3,599	21,940	626
Deferred tax expense (benefit)
Federal	3,887	(2,255)	5,165
State	320	(1,178)	2
Continuing operations	4,207	(3,433)	5,167
Total	$ 7,806	$ 18,507	$ 5,793