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Intangible Assets, Net - Summary of Estimated Future Amortization Expense of Software Licenses (Detail) - USD ($)
$ in Thousands
Jul. 31, 2020
Jan. 31, 2020
Finite Lived Intangible Assets [Line Items]    
Net Carrying Amount $ 16,088 $ 17,826
Internal-use software licenses [Member]    
Finite Lived Intangible Assets [Line Items]    
2021 (6 months remaining) 3,101  
2022 5,052  
2023 3,736  
2024 99  
2025 0  
Thereafter 0  
Net Carrying Amount $ 11,988 $ 13,726