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Change in Change in Accumulated Other Comprehensive Loss (Detail) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance $ 1,059,768 $ 615,568
Balance 1,529,150 1,059,768
Foreign Currency Translation Adjustment    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (15,027) (11,893)
Other comprehensive loss 17,112 (3,134)
Balance $ 2,085 $ (15,027)