Condensed Consolidated Statements of Comprehensive Loss - Unaudited - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Statement of Comprehensive Income [Abstract]        
Net loss $ (3,962) $ (3,725) $ (11,669) $ (8,456)
Other comprehensive loss:        
Changes in foreign currency translation adjustment 57 (136) (113) (151)
Comprehensive loss $ (3,905) $ (3,861) $ (11,782) $ (8,607)