Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Income	Retained Earnings
Beginning balance (in shares) at Feb. 28, 2022		23,800
Beginning balance at Feb. 28, 2022	$ 1,327,339	$ 2,380	$ 303,740	$ 202	$ 1,021,017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	24,595				24,595
Other comprehensive income, net of tax	3,159			3,159
Exercise of stock options (in shares)		8
Exercise of stock options	659	$ 1	658
Issuance and settlement of restricted stock (in shares)		235
Issuance and settlement of restricted stock	0	$ 24	(24)
Issuance of common stock related to stock purchase plan (in shares)		13
Issuance of common stock related to stock purchase plan	2,275	$ 1	2,274
Common stock repurchased and retired (in shares)		(89)
Common stock repurchased and retired	(18,224)	$ (9)	(18,113)		(102)
Share-based compensation	16,619		16,619
Ending balance (in shares) at May. 31, 2022		23,967
Ending balance at May. 31, 2022	1,356,422	$ 2,397	305,154	3,361	1,045,510
Beginning balance (in shares) at Feb. 28, 2022		23,800
Beginning balance at Feb. 28, 2022	1,327,339	$ 2,380	303,740	202	1,021,017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income, net of tax	6,998
Ending balance (in shares) at Aug. 31, 2022		23,969
Ending balance at Aug. 31, 2022	1,398,346	$ 2,397	312,567	7,200	1,076,182
Beginning balance (in shares) at May. 31, 2022		23,967
Beginning balance at May. 31, 2022	1,356,422	$ 2,397	305,154	3,361	1,045,510
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	30,672				30,672
Other comprehensive income, net of tax	3,839			3,839
Issuance and settlement of restricted stock (in shares)		2
Issuance and settlement of restricted stock	(1)		(1)
Common stock repurchased and retired	(81)		(81)
Share-based compensation	7,495		7,495
Ending balance (in shares) at Aug. 31, 2022		23,969
Ending balance at Aug. 31, 2022	1,398,346	$ 2,397	312,567	7,200	1,076,182
Beginning balance (in shares) at Feb. 28, 2023		23,994
Beginning balance at Feb. 28, 2023	1,488,811	$ 2,399	317,277	4,947	1,164,188
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22,581				22,581
Other comprehensive income, net of tax	(3,715)			(3,715)
Exercise of stock options (in shares)		5
Exercise of stock options	212	$ 1	211
Issuance and settlement of restricted stock (in shares)		120
Issuance and settlement of restricted stock	0	$ 12	(12)
Issuance of common stock related to stock purchase plan (in shares)		23
Issuance of common stock related to stock purchase plan	2,168	$ 2	2,166
Common stock repurchased and retired (in shares)		(45)
Common stock repurchased and retired	(4,446)	$ (4)	(4,442)
Share-based compensation	9,297		9,297
Ending balance (in shares) at May. 31, 2023		24,097
Ending balance at May. 31, 2023	1,514,908	$ 2,410	324,497	1,232	1,186,769
Beginning balance (in shares) at Feb. 28, 2023		23,994
Beginning balance at Feb. 28, 2023	1,488,811	$ 2,399	317,277	4,947	1,164,188
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income, net of tax	(1,261)
Ending balance (in shares) at Aug. 31, 2023		23,719
Ending balance at Aug. 31, 2023	1,501,883	$ 2,372	330,227	3,686	1,165,598
Beginning balance (in shares) at May. 31, 2023		24,097
Beginning balance at May. 31, 2023	1,514,908	$ 2,410	324,497	1,232	1,186,769
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	27,381				27,381
Other comprehensive income, net of tax	2,454			2,454
Issuance and settlement of restricted stock (in shares)		4
Issuance and settlement of restricted stock	0
Common stock repurchased and retired (in shares)		(382)
Common stock repurchased and retired	(50,089)	$ (38)	(1,499)		(48,552)
Share-based compensation	7,229		7,229
Ending balance (in shares) at Aug. 31, 2023		23,719
Ending balance at Aug. 31, 2023	$ 1,501,883	$ 2,372	$ 330,227	$ 3,686	$ 1,165,598