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Stock-based Compensation - Stock Option Activities (Detail)
$ / shares in Units, $ in Thousands
 3 Months Ended
Apr. 30, 2023
USD ($)
$ / shares
shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Shares, Outstanding | shares 484,791
Shares, Exercised | shares (28,334)
Shares, Forfeited | shares (648)
Shares, Outstanding | shares 455,809
Shares, Exercisable | shares 361,063
Weighted-Average Exercise Price, Outstanding | $ / shares $ 42.18
Weighted-Average Exercise Price, Exercised | $ / shares 23.02
Weighted-Average Exercise Price, Forfeited | $ / shares 41.49
Weighted-Average Exercise Price, Outstanding | $ / shares 43.37
Weighted-Average Exercise Price, Exercisable | $ / shares $ 45.54
Total Intrinsic Value Of Options Exercised | $ $ 1,758
Weighted-Average Remaining Contractual Term, Outstanding 4 years 2 months 12 days
Weighted-Average Remaining Contractual Term, Exercisable 3 years 6 months
Aggregate Intrinsic Value, Outstanding | $ $ 17,106
Aggregate Intrinsic Value, Exercisable | $ $ 12,700