Stock-based Compensation - Stock Option Activities (Detail) $ / shares in Units, $ in Thousands	9 Months Ended
	Oct. 31, 2024 USD ($) $ / shares shares
Share-Based Payment Arrangement [Abstract]
Shares, Outstanding | shares	373,318
Shares, Exercised | shares	(105,890)
Shares, Forfeited | shares	(63)
Shares, Expired | shares	(1,425)
Shares, Outstanding | shares	265,940
Shares, Exercisable | shares	246,289
Weighted-Average Exercise Price, Outstanding | $ / shares	$ 46.39
Weighted-Average Exercise Price, Exercised | $ / shares	37.59
Weighted-Average Exercise Price, Forfeited | $ / shares	111.5
Weighted-Average Exercise Price, Expired | $ / shares	50.93
Weighted-Average Exercise Price, Outstanding | $ / shares	49.86
Weighted-Average Exercise Price, Exercisable | $ / shares	$ 51.26
Total Intrinsic Value Of Options Exercised | $	$ 1,705
Weighted-Average Remaining Contractual Term, Outstanding	3 years 7 months 20 days
Weighted-Average Remaining Contractual Term, Exercisable	3 years 5 months 12 days
Aggregate Intrinsic Value, Outstanding | $	$ 2,883
Aggregate Intrinsic Value, Exercisable | $	$ 2,377