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Goodwill and Intangible Assets - Estimated Future Amortization Expense for Intangible Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]    
2020 (remaining) $ 3,169  
2021 12,112  
2022 11,686  
2023 11,408  
2024 11,122  
2025 4,432  
Thereafter 9,799  
Finite lived intangible assets, Net $ 63,728 $ 73,280