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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
Apr. 30, 2024
Apr. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 7,599 $ 7,735
Performance Stock Units (PSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense 1,237 1,320
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based compensation expense $ 6,362 $ 6,415