Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Current
U.S.
State
Foreign	24	88
Total current income tax expense	24	88
Deferred
U.S.
State
Foreign
Total deferred income tax expense (benefit)
Total income tax expense (benefit)	$ 24	$ 88