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Consolidated Statements of Comprehensive Loss (Unaudited) (Parenthetical) - 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]        
Foreign currency translation adjustment, tax impact $ 52 $ (2,090) $ 184 $ (554)
Available-for-sale securities, tax impact $ 3 $ 122 $ 3 $ 66