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Long-Lived Assets - Summary of Changes in Carrying Amount of Goodwill (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Goodwill RollForward  
Beginning balance $ 272,322
Goodwill acquired during period 168
Adjustments related to prior acquisitions (15)
Effects of changes in foreign currency exchange rates 790
Ending balance $ 273,265