Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Federal:
Current	$ 1,521	$ 2,289	$ (2,459)
Deferred	(682)	(313)	4,097
Federal	839	1,976	1,638
State:
Current	585	603	231
Deferred	(299)	118	217
State	286	721	448
Total provision	$ 1,125	$ 2,697	$ 2,086