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Condensed Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Statement of Comprehensive Income [Abstract]        
Net loss $ (2,473) $ (4,340) $ (4,115) $ (4,881)
Other comprehensive income:        
Foreign currency translation adjustments 0 0 0 0
Comprehensive loss $ (2,473) $ (4,340) $ (4,115) $ (4,881)