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Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Jan. 31, 2022	$ 1,745,740	$ 10		$ 1,770,560	$ (24,830)
Beginning Balances (in shares) at Jan. 31, 2022		96,431,044
Comprehensive income	65,651			91,006	(25,355)
Share-based compensation	14,109		$ 14,109
Share-based awards	376		376
Share-based awards (in shares)		724,215
Share repurchases	(118,684)	$ (1)	(14,485)	(104,198)
Share repurchases (in shares)		(4,981,917)
Ending Balance at Jul. 31, 2022	$ 1,707,192	$ 9		1,757,368	(50,185)
Ending Balances (in shares) at Jul. 31, 2022	92,173,342	92,173,342
Beginning Balance at Apr. 30, 2022	$ 1,695,921	$ 9		1,740,508	(44,596)
Beginning Balances (in shares) at Apr. 30, 2022		94,434,621
Comprehensive income	53,884			59,473	(5,589)
Share-based compensation	7,007		7,007
Share-based awards	376		376
Share-based awards (in shares)		54,532
Share repurchases	(49,996)		(7,383)	(42,613)
Share repurchases (in shares)		(2,315,811)
Ending Balance at Jul. 31, 2022	$ 1,707,192	$ 9		1,757,368	(50,185)
Ending Balances (in shares) at Jul. 31, 2022	92,173,342	92,173,342
Beginning Balance at Jan. 31, 2023	$ 1,792,683	$ 9	15,248	1,826,061	(48,635)
Beginning Balances (in shares) at Jan. 31, 2023	92,180,709	92,180,709
Comprehensive income	$ 166,742			156,909	9,833
Share-based compensation	15,556		15,556
Share-based awards	594		594
Share-based awards (in shares)		896,119
Share repurchases	(8,184)		(8,184)
Share repurchases (in shares)		(303,579)
Ending Balance at Jul. 31, 2023	$ 1,967,391	$ 9	23,214	1,982,970	(38,802)
Ending Balances (in shares) at Jul. 31, 2023	92,773,249	92,773,249
Beginning Balance at Apr. 30, 2023	$ 1,850,682	$ 9	15,133	1,878,878	(43,338)
Beginning Balances (in shares) at Apr. 30, 2023		92,677,835
Comprehensive income	108,628			104,092	4,536
Share-based compensation	7,821		7,821
Share-based awards	594		594
Share-based awards (in shares)		105,731
Share repurchases	(334)		(334)
Share repurchases (in shares)		(10,317)
Ending Balance at Jul. 31, 2023	$ 1,967,391	$ 9	$ 23,214	$ 1,982,970	$ (38,802)
Ending Balances (in shares) at Jul. 31, 2023	92,773,249	92,773,249

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