Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal:
Current	$ 1,798	$ 862	$ (1,266)
Deferred	866	64	255
Federal	2,664	926	(1,011)
State:
Current	812	353	(120)
Deferred	504	41	(152)
State	1,316	394	(272)
Provision (benefit) for income taxes	$ 3,980	$ 1,320	$ (1,283)