Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - 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	$ (946)	$ (1,920)	$ (6,065)	$ (6,114)
Other comprehensive loss:
Foreign currency translation adjustments	0	0	(2)	(3)
Comprehensive loss	$ (946)	$ (1,920)	$ (6,067)	$ (6,117)