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Share Repurchase Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Total cost	$ 118,776	$ 63,555	$ 10,912
Share repurchase program
Equity, Class of Treasury Stock [Line Items]
Number of common shares repurchased and subsequently retired	4,736,405	1,959,159
Total cost	$ 112,016	$ 55,765
Average cost per share, including commissions	$ 23.65	$ 28.46

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Total cost of shares repurchased divided by the total number of shares repurchased.

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