Income Taxes - Statutory Federal Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Federal provision at statutory tax rate (34%)	$ (154)	$ 65	$ (43)
Federal tax rate	34.00%	34.00%	34.00%
State and local taxes, net of federal benefit	$ (30)	$ 12	$ (9)
Other	(1,255)	(645)	(1,057)
Benefit (provision) for income taxes	$ (1,439)	$ (568)	$ (1,109)