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Intangible Assets - Estimated Amortization Expense Succeeding Fiscal Years (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
2021 $ 3,656  
2022 3,286  
2023 2,594  
2024 2,080  
2025 1,757  
Thereafter 2,182  
Net Carrying Value $ 15,555 $ 39,490