Income Taxes, Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Current [Abstract]
United States and state	$ 0	$ 0
Foreign, net	(6)	(6)
Deferred [Abstract]
United States and state	0	0
Foreign	0	0
Total income tax benefit expense	$ (6)	$ (6)