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Intangible Assets and Goodwill - Estimated Amortization Expense (Detail) - USD ($)
$ in Thousands
Jan. 31, 2020
Jan. 31, 2019
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]    
Fiscal 2021 $ 19,595  
Fiscal 2022 18,397  
Fiscal 2023 18,342  
Fiscal 2024 18,160  
Fiscal 2025 17,417  
Thereafter 42,690  
Intangible assets, Net $ 134,601 $ 24,521