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Estimated Future Amortization Expense (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
2021 $ 48,535  
2022 47,724  
2023 47,035  
2024 33,933  
2025 31,335  
Thereafter 129,070  
Intangible assets, net $ 337,632 $ 333,952