Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ (140)	$ 0	$ 145
State and local	(1,299)	(645)	(1,130)
NOL utilized	59	0	0
Deferred:
Federal	(44)	59	(91)
State and local	(15)	18	(33)
Benefit (provision) for income taxes	$ (1,439)	$ (568)	$ (1,109)