Share-Based Compensation - Aggregated Information Regarding Stock Options Granted (Detail) - $ / shares	12 Months Ended
Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Share-based Compensation [Abstract]
Beginning balance, Number of Options	598,043	622,083	679,044
Granted, Number of Options	0	0	0
Exercised, Number of Options	(42,944)	(6,425)	(1,200)
Forfeited, Number of Options	(5,500)	(17,615)	(54,361)
Canceled, Number of Options	(2,400)	0	(1,400)
Ending balance, Number of Options	547,199	598,043	622,083
Beginning balance, Weighted-Average Exercise Price Per Share	$ 14.67	$ 14.63	$ 14.46
Granted, Weighted-Average Exercise Price Per Share	0	0	0
Exercised, Weighted-Average Exercise Price Per Share	8.74	9.34	7.6
Forfeited, Weighted-Average Exercise Price Per Share	15.42	15.09	12.89
Cancelled, Weighted-Average Exercise Price Per Share	8.09	0	7.36
Ending balance, Weighted-Average Exercise Price Per Share	$ 15.16	$ 14.67	$ 14.63

No definition available.

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ References

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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