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, 2023		24,912
Balance, beginning 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	1,904		1,904
Common stock issued under stock-based plans and related income tax expense (shares)		101
Common stock issued under stock-based plans and related tax expense	(1,711)	$ 101	(1,812)
Dividends on Series A Preferred Stock	(3,600)			(3,600)
Cash dividends paid on common shares	(4,235)			(4,235)
Redemption premium on Series A Preferred Stock	0
Net income (loss) available to common shareholders	28,522			28,522
Other comprehensive loss	(2,967)				(2,967)
Balance, ending balance (shares) at May. 31, 2023		25,013
Balance, ending balance at May. 31, 2023	637,651	$ 25,013	93,449	526,729	(7,540)
Balance, beginning balance (shares) at Feb. 29, 2024		25,102
Balance, beginning 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	2,535		2,535
Common stock issued under stock-based plans and related income tax expense (shares)		112
Common stock issued under stock-based plans and related tax expense	(4,567)	$ 112	(4,679)
Secondary public offering and issuance of additional common stock (in shares)		4,600
Secondary public offering and issuance of additional common stock	308,723	$ 4,600	304,123
Dividends on Series A Preferred Stock	(1,200)			(1,200)
Cash dividends paid on common shares	(4,267)			(4,267)
Redemption premium on Series A Preferred Stock	(75,198)			(75,198)
Net income (loss) available to common shareholders	39,602			39,602
Other comprehensive loss	835				835
Balance, ending balance (shares) at May. 31, 2024		29,814
Balance, ending balance at May. 31, 2024	$ 967,232	$ 29,814	$ 405,309	$ 535,168	$ (3,059)