Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Current
U.S.
State
Foreign	88	331
Total current income tax expense	88	331
Deferred
U.S.
State
Foreign		(554)
Total deferred income tax expense (benefit)		(554)
Total income tax expense (benefit)	$ 88	$ (223)