Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current tax expense (benefit):
Federal	$ (86)	$ 26	$ 0
State and local	20	35	19
Foreign	42	272	0
Total current tax expense	(24)	333	47
Deferred tax expense:
Federal	0	0	0
State and local	0	0	0
Foreign	(61)	(46)	(12)
Total deferred tax expense	(61)	(46)	(12)
Total income tax (benefit)/expense	$ (85)	$ 287	$ 35