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Stock-based Compensation - Stock Option Activities (Detail)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jul. 31, 2023
USD ($)
$ / shares
shares
Share-Based Payment Arrangement [Abstract]  
Shares, Outstanding | shares 484,791
Shares, Exercised | shares (48,807)
Shares, Forfeited | shares (707)
Shares, Expired | shares (394)
Shares, Outstanding | shares 434,883
Shares, Exercisable | shares 358,508
Weighted-Average Exercise Price, Outstanding | $ / shares $ 42.18
Weighted-Average Exercise Price, Exercised | $ / shares 24.7
Weighted-Average Exercise Price, Forfeited | $ / shares 42.63
Weighted-Average Exercise Price, Expired | $ / shares 103.7
Weighted-Average Exercise Price, Outstanding | $ / shares 44.09
Weighted-Average Exercise Price, Exercisable | $ / shares $ 45.87
Total Intrinsic Value Of Options Exercised | $ $ 2,784
Weighted-Average Remaining Contractual Term, Outstanding 3 years 11 months 15 days
Weighted-Average Remaining Contractual Term, Exercisable 3 years 4 months 6 days
Aggregate Intrinsic Value, Outstanding | $ $ 17,424
Aggregate Intrinsic Value, Exercisable | $ $ 13,670