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Goodwill and Other Intangible Assets, Net - Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
Beginning balance $ 553,745 $ 504,646
Acquisitions 3,065 55,872
Measurement period adjustments (301) (7,130)
Cumulative translation adjustment (298) 357
Ending balance $ 556,211 $ 553,745