Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Current:
State	$ 45	$ 165	$ 215	$ 240
Federal	0	0	5	0
Current income tax expense (benefit)	$ 45	$ 165	$ 220	$ 240