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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, 2019	$ 1,489,098	$ 11		$ 1,516,190	$ (27,103)
Beginning Balances (in shares) at Jan. 31, 2019		105,642,283
Comprehensive income (loss)	82,721			92,905	(10,184)
Share-based compensation	11,461		$ 11,461
Share-based awards	974		974
Share-based awards (in shares)		568,989
Share repurchases	(222,850)	$ (1)	(12,435)	(210,414)
Share repurchases (in shares)		(8,246,260)
Ending Balance at Jul. 31, 2019	$ 1,361,404	$ 10		1,398,681	(37,287)
Ending Balances (in shares) at Jul. 31, 2019	97,965,012	97,965,012
Beginning Balance at Apr. 30, 2019	$ 1,447,971	$ 10		1,478,678	(30,717)
Beginning Balances (in shares) at Apr. 30, 2019		103,599,364
Comprehensive income (loss)	53,750			60,320	(6,570)
Share-based compensation	5,908		5,908
Share-based awards (in shares)		5,000
Share repurchases	(146,225)		(5,908)	(140,317)
Share repurchases (in shares)		(5,639,352)
Ending Balance at Jul. 31, 2019	$ 1,361,404	$ 10		1,398,681	(37,287)
Ending Balances (in shares) at Jul. 31, 2019	97,965,012	97,965,012
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	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

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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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