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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS    
Net loss $ (23,138) $ (29,727)
Other comprehensive loss:    
Foreign currency translation adjustments 570 (562)
Comprehensive loss $ (22,568) $ (30,289)