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Share-Based Compensation - Aggregated Information Regarding RSUs and RSAs Granted (Detail) - Restricted Stock Award Preferred Stock Unit And Restricted Stock Unit [Member] - $ / shares
 12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Beginning balance, Outstanding Restricted Stock Units and Restricted Stock Awards 274,927 220,980 197,413
Granted, Restricted Stock Units and Restricted Stock Awards 157,643 141,371 151,406
Vested, Restricted Stock Units and Restricted Stock Awards (116,288) (85,324) (126,939)
Forfeited, Restricted Stock Units and Restricted Stock Awards (15,577) (2,100) (900)
Ending balance, Outstanding Restricted Stock Units and Restricted Stock Awards 300,705 274,927 220,980
Beginning balance, Weighted Average Grant Date Fair Value $ 12.82 $ 13.23 $ 9.96
Granted, Weighted Average Grant Date Fair Value 12.64 12.7 14.51
Vested, Weighted Average Grant Date Fair Value 12.29 13.45 10.43
Forfeited, Weighted Average Grant Date Fair Value 13.37 13.25 14.26
Ending balance, Weighted Average Grant Date Fair Value $ 12.9 $ 12.82 $ 13.23