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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, 2024
Jul. 31, 2023
Jul. 31, 2024
Jul. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 7,957 $ 7,821 $ 15,556 $ 15,556
Performance Stock Units (PSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense 1,186 1,231 2,423 2,551
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation expense $ 6,771 $ 6,590 $ 13,133 $ 13,005