Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal benefit at statutory rate	$ (1,907)	$ (10,352)
State income taxes, net of Federal taxes	(657)	(1,809)
State credits	(112)	(506)
Warrant liabilities	(111)	(465)
Other permanent differences	12	14
Provision related to change in valuation allowance	(1,415)	(60,629)
Federal rate adjustment		25,762
NQ Options		47
Current year tax credit		(665)
NOL Adjustments		45,521
Termination/Cancellation of Equity Compensation Awards	695	2,998
Return to provision	664	84
Other, net	2	3
Net loss before income taxes	$ 1	$ 4