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Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Related to Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Jul. 31, 2021
Jan. 31, 2021
Jan. 31, 2020
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]      
2022 $ 588 $ 1,266  
2023 1,167 1,125  
2024 1,032 989  
2025 837 828  
2026 700 658  
Thereafter 2,131 1,884  
Net Carrying Amount $ 6,455 $ 6,750 $ 8,136