Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax benefit computed at federal statutory rate	$ (745)	$ (3,084)
State taxes, net of federal benefit	230	557
Increase (decrease) in valuation allowance	894	(10,645)
Adjustment to income tax accruals	(380)	(870)
Non-deductible expenses	1	317
Impact of Tax Reform	0	13,736
Total income tax expense	$ 0	$ 11