Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal:
Current	$ (2,459)	$ 903	$ 6,812
Deferred	4,097	1,092	(1,233)
Federal	1,638	1,995	5,579
Current
Current	231	67	2,133
Deferred	217	661	(345)
State	448	728	1,788
Total provision	$ 2,086	$ 2,723	$ 7,367