Condensed Consolidated Statement of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance, beginning balance (shares) at Feb. 28, 2022		24,688
Balance, beginning balance at Feb. 28, 2022	$ 667,365	$ 24,688	$ 85,847	$ 584,154	$ (27,324)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	8,362		8,362
Common stock issued under stock-based plans and related income tax expense (shares)		154
Common stock issued under employee stock purchase plan (shares)		70
Common stock issued under employee stock purchase plan	2,372	$ 70	2,302
Dividends on Series A Preferred Stock	(8,240)
Cash dividends paid on common shares	(16,898)			(16,898)
Net income available to common shareholders	(52,974)			(52,974)
Other comprehensive loss	22,751				22,751
Balance, ending balance (shares) at Feb. 28, 2023		24,912
Balance, ending balance at Feb. 28, 2023	619,738	$ 24,912	93,357	506,042	(4,573)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	9,488		9,488
Common stock issued under stock-based plans and related income tax expense (shares)		122
Common stock issued under employee stock purchase plan (shares)		68
Common stock issued under employee stock purchase plan	2,364	$ 68	2,296
Dividends on Series A Preferred Stock	(14,400)
Cash dividends paid on common shares	(17,018)			(17,018)
Net income available to common shareholders	101,607			101,607
Other comprehensive loss	679
Balance, ending balance (shares) at Feb. 29, 2024		25,102
Balance, ending balance at Feb. 29, 2024	700,769	$ 25,102	103,330	576,231	(3,894)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	13,251		13,251
Common stock issued under stock-based plans and related income tax expense (shares)		137
Common stock issued under employee stock purchase plan (shares)		74
Common stock issued under employee stock purchase plan	2,795	$ 74	2,721
Secondary public offering and issuance of additional common stock (in shares)		4,600
Secondary public offering and issuance of additional common stock	308,668	$ 4,600	304,068
Dividends on Series A Preferred Stock	(1,200)			(1,200)
Cash dividends paid on common shares	(19,508)			(19,508)
Redemption premium on Series A Preferred Stock	(75,198)			(75,198)
Net income available to common shareholders	128,833			128,833
Other comprehensive loss	(7,686)
Balance, ending balance (shares) at Feb. 28, 2025		29,913
Balance, ending balance at Feb. 28, 2025	$ 1,045,495	$ 29,913	$ 418,004	$ 609,158	$ (11,580)