CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,664)	$ (1,865)	$ (8,302)	$ (9,557)
Other comprehensive income (loss):
Foreign currency translation adjustment	(530)	(101)	(362)	(478)
Other comprehensive income (loss)	(530)	(101)	(362)	(478)
Comprehensive loss	$ (3,194)	$ (1,966)	$ (8,664)	$ (10,035)