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
Statement of Other Comprehensive Income [Abstract]
Net loss	$ (2,548)	$ (2,284)	$ (6,160)	$ (5,869)
Other comprehensive income (loss):
Foreign currency translation adjustment	(20)	43	(5)	15
Comprehensive loss	$ (2,568)	$ (2,241)	$ (6,165)	$ (5,854)