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. 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 income	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)
Balance, beginning balance (shares) at Feb. 28, 2025		29,913
Balance, beginning balance at Feb. 28, 2025	1,045,495	$ 29,913	418,004	609,158	(11,580)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	5,086		5,086
Common stock issued under stock-based plans and related income tax expense (shares)		94
Common stock issued under stock-based plans and related tax expense	(4,597)	$ 94	(4,691)
Cash dividends paid on common shares	(5,085)			(5,085)
Net income (loss) available to common shareholders	170,908			170,908
Other comprehensive income	2,491				2,491
Balance, ending balance (shares) at May. 31, 2025		30,007
Balance, ending balance at May. 31, 2025	$ 1,214,298	$ 30,007	$ 418,399	$ 774,981	$ (9,089)