Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (4,340)	$ (2,254)	$ (4,881)	$ (5,119)
Other comprehensive loss:
Foreign currency translation adjustments	0	(2)	0	(2)
Comprehensive loss	$ (4,340)	$ (2,256)	$ (4,881)	$ (5,121)