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Goodwill - Schedule of Goodwill Activity (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Goodwill    
Net balance at beginning of period $ 97,552  
Net foreign currency translation (1,329)  
Net balance at end of period 96,223  
Goodwill impairment $ 0 $ 0