Income Taxes - Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal income taxes:
Current	$ 430	$ (14)	$ (516)
Deferred	(20)	37	(131)
State income taxes:
Current	85	(1)	(62)
Deferred	(4)	7	(16)
Income tax benefit (provision)	$ 491	$ 29	$ (725)