v3.26.1
Share-Based Compensation - Share-Based Compensation Expense Included in Selling, General and Administrative Expenses in Consolidated Statements of Income (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 7,565 $ 7,193 $ 15,702 $ 14,956
Performance Stock Units (PSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 1,194 1,148 2,358 2,353
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 6,371 $ 6,045 $ 13,344 $ 12,603