Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current income tax provision (benefit):
Federal	$ 303	$ (2,738)	$ (16)
State	88	(32)	(355)
Total	391	(2,770)	(371)
Deferred income tax provision (benefit):
Federal	510	164	136
State	108	1	64
Total	618	165	200
Total income tax provision (benefit)	$ 1,009	$ (2,605)	$ (171)