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Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Consolidated Statements of Comprehensive Loss      
Net income $ (40,796) $ (31,536) $ (27,019)
Other comprehensive loss:      
Cumulative translation adjustment (153)    
Total other comprehensive loss (153)    
Comprehensive loss $ (40,949) $ (31,536) $ (27,019)