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Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Tax benefit associated with share-based compensation expense $ 3,086 $ 6,379 $ 6,311
Tax benefit realized from share-based compensation $ 1,763 $ 3,467 $ 5,573
Weighted average grant date fair value $ 26.96 $ 25.38 $ 38.15
2017 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common shares authorized 10,000,000    
Common shares available to grant 4,850,674    
2008 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common shares authorized 10,000,000    
Common shares available to grant 5,594,830    
2017 and 2008 Stock Incentive Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 7 years    
2017 and 2008 Stock Incentive Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 10 years    
Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 1 year    
Compensation cost of stock options granted but not yet vested $ 0    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost of stock options granted but not yet vested $ 28,769    
Weighted average grant date fair value $ 27.42 25.01 37.3
Weighted average period of recognition (in years) 1 year 10 months 24 days    
Vested, Shares 760,702    
Aggregate grant date fair value, vested $ 31.11 $ 30.48 $ 29.66
Restricted Stock Units (RSUs) | Non-employee Directors      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted 0 0 0
Restricted Stock Units (RSUs) | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 2 years    
Restricted Stock Units (RSUs) | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 4 years    
Performance Stock Units (PSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost of stock options granted but not yet vested $ 5,269    
Weighted average grant date fair value $ 26.96    
Weighted average period of recognition (in years) 1 year 9 months 18 days    
Vested, Shares 131,248    
Aggregate grant date fair value, vested $ 33.01 $ 27.79 $ 26.54
Performance Stock Units (PSUs) | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 2 years    
Performance Stock Units (PSUs) | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period, maximum (in years) 4 years