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Goodwill and Intangible Assets - Changes in Intangible Assets, Net of Accumulated Amortization (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2021
USD ($)
Finite-lived Intangible Assets [Roll Forward]  
Beginning balance $ 161,051
Additions (Note 19) 164,440
Amortization expense (11,507)
Currency translation (1,378)
Ending balance $ 312,606