v3.26.1
Net Income per Common Share - Reconciliation of Weighted Average Common Shares Outstanding Used for Computation of Basic and Diluted Net Income per Common Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Earnings Per Share [Abstract]    
Net Income (Loss) $ 115,705 $ 108,347
Basic weighted-average common shares outstanding 87,503,853 91,752,408
Effect of dilutive options, performance stock units and restricted stock units 1,297,993 1,723,427
Diluted weighted-average shares outstanding 88,801,846 93,475,835
Basic $ 1.32 $ 1.18
Diluted $ 1.3 $ 1.16