Income Taxes - Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal income taxes:
Current	$ (197)	$ 102	$ (37)
Deferred	(109)	(72)	(6)
State income taxes:
Current	(24)	13	(26)
Deferred	(13)	(9)	(1)
Income tax benefit (provision)	$ (343)	$ 34	$ (70)