Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net loss	$ (4,279)	$ (2,906)	$ (8,675)	$ (5,567)
Foreign currency translation adjustments	(269)	(666)	244	(391)
Comprehensive loss	$ (4,548)	$ (3,572)	$ (8,431)	$ (5,958)