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Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Related to Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]      
2021 $ 1,733    
2022 1,256    
2023 1,088    
2024 976    
2025 746    
Thereafter 2,362    
Net Carrying Amount $ 8,161 $ 10,495 $ 8,015