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Segment and Geographic Information - Additional Information (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2021
USD ($)
Segment
Dec. 31, 2020
USD ($)
Segment Reporting Information [Line Items]    
Number of reportable segments | Segment 2  
Assets $ 819,917 $ 502,298
Goodwill 155,707 29,129
International    
Segment Reporting Information [Line Items]    
Assets 33,877 32,012
Goodwill $ 15,728 $ 16,652