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Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Jan. 31, 2020	$ 1,455,355	$ 10	$ 9,477	$ 1,473,872	$ (28,004)
Beginning Balances (in shares) at Jan. 31, 2020		97,976,815
Comprehensive income (loss)	(105,241)			(104,042)	(1,199)
Share-based compensation	11,257		11,257
Share-based awards (in shares)		440,508
Share repurchases	(10,778)		(10,778)
Share repurchases (in shares)		(637,737)
Ending Balance at Jul. 31, 2020	$ 1,350,593	$ 10	9,956	1,369,830	(29,203)
Ending Balances (in shares) at Jul. 31, 2020	97,779,586	97,779,586
Beginning Balance at Apr. 30, 2020	$ 1,298,108	$ 10	3,593	1,335,430	(40,925)
Beginning Balances (in shares) at Apr. 30, 2020		97,777,322
Comprehensive income (loss)	46,122			34,400	11,722
Share-based compensation	6,385		6,385
Share-based awards (in shares)		3,334
Share repurchases	(22)		(22)
Share repurchases (in shares)		(1,070)
Ending Balance at Jul. 31, 2020	$ 1,350,593	$ 10	9,956	1,369,830	(29,203)
Ending Balances (in shares) at Jul. 31, 2020	97,779,586	97,779,586
Beginning Balance at Jan. 31, 2021	$ 1,477,358	$ 10	19,360	1,475,108	(17,120)
Beginning Balances (in shares) at Jan. 31, 2021	97,815,985	97,815,985
Comprehensive income (loss)	$ 184,841			180,809	4,032
Share-based compensation	11,968		11,968
Share-based awards	2,815		2,815
Share-based awards (in shares)		763,636
Share repurchases	(7,562)		(7,562)
Share repurchases (in shares)		(222,531)
Ending Balance at Jul. 31, 2021	$ 1,669,420	$ 10	26,581	1,655,917	(13,088)
Ending Balances (in shares) at Jul. 31, 2021	98,357,090	98,357,090
Beginning Balance at Apr. 30, 2021	$ 1,534,509	$ 10	17,585	1,528,655	(11,741)
Beginning Balances (in shares) at Apr. 30, 2021		98,235,127
Comprehensive income (loss)	125,915			127,262	(1,347)
Share-based compensation	7,398		7,398
Share-based awards	1,742		1,742
Share-based awards (in shares)		125,800
Share repurchases	(144)		(144)
Share repurchases (in shares)		(3,837)
Ending Balance at Jul. 31, 2021	$ 1,669,420	$ 10	$ 26,581	$ 1,655,917	$ (13,088)
Ending Balances (in shares) at Jul. 31, 2021	98,357,090	98,357,090

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Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.

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