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Accrued Compensation (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Payables and Accruals [Abstract]    
Accrued bonus $ 2,343 $ 7,602
Accrued commission 529 1,779
Accrued salary/wages 7,079 7,107
Accrued social insurance 7,340 7,375
Accrued vacation/holiday 3,695 3,307
Other accrued compensation 1,816 1,761
Total accrued compensation $ 22,802 $ 28,931