Consolidated Statement of Comprehensive Loss - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Statement of Comprehensive Income [Abstract]      
Net loss $ (41,139) $ (38,121) $ (38,150)
Other comprehensive income:      
Foreign currency translation gain 784 2,182 242
Other comprehensive gain 784 2,182 242
Comprehensive loss $ (40,355) $ (35,939) $ (37,908)