Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Current income tax expense:
State and local									$ 157	$ 291
Total current income tax expense									157	291
Deferred income tax expense:
United States federal										(902)
State and local									36	1,211
Total deferred income tax expense									36	309
Income tax expense	$ (324)	$ 213	$ 186	$ 118	$ 454	$ 52	$ 23	$ 71	$ 193	$ 600