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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 $ (13,769) $ (7,434)
Other comprehensive loss:    
Foreign currency translation adjustment loss (13) (51)
Total comprehensive loss $ (13,782) $ (7,485)