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Amortization Expense for Amortized Intangible Assets (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Liabilities [Line Items]    
2020 (remaining nine months) $ 11,348  
2021 14,728  
2022 14,726  
2023 14,630  
2024 14,188  
2025 and thereafter 138,206  
Total $ 207,826 $ 211,852