Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2023	Nov. 30, 2022
Income Statement [Abstract]
Sales	$ 381,605	$ 373,301	$ 1,171,020	$ 987,145
Costs and Expenses
Cost of sales	293,456	300,219	888,606	752,455
Gross margin	88,149	73,082	282,414	234,690
Selling, general and administrative	35,325	27,689	103,087	97,247
Operating income from continuing operations	52,824	45,393	179,327	137,443
Interest expense	25,855	26,123	82,331	61,739
Equity in (earnings) loss of unconsolidated subsidiaries	(8,742)	(1,006)	(11,136)	(1,006)
Other (income) expense, net	41	(610)	(9)	(582)
Income from continuing operations before income taxes	35,670	20,886	108,141	77,292
Income tax expense	8,780	2,447	24,397	18,380
Net income from continuing operations	26,890	18,439	83,744	58,912
Income from discontinued operations, net of tax	0	1,665	0	17,126
Loss on disposal of discontinued operations, net of tax	0	(40,646)	0	(130,073)
Net income (loss) from discontinued operations	0	(38,981)	0	(112,947)
Net income (loss)	26,890	(20,542)	83,744	(54,035)
Dividends on preferred stock	(3,600)	(3,600)	(10,800)	(4,640)
Net income (loss) available to common shareholders	$ 23,290	$ (24,142)	$ 72,944	$ (58,675)
Basic earnings (loss) per share
Earnings (loss) per common share from continuing operations (in dollars per share)	$ 0.93	$ 0.60	$ 2.91	$ 2.19
Earnings (loss) per common share from discontinued operations (in dollars per share)	0	(1.57)	0	(4.55)
Basic earnings per common share (usd per share)	0.93	(0.97)	2.91	(2.37)
Diluted Earnings (Loss) Per Share [Abstract]
Diluted earnings per common share (usd per share)	0.92	(0.97)	2.86	(2.35)
Earnings (loss) per common share from continuing operations (in dollars per share)	0.92	0.59	2.86	2.17
Earnings (loss) per common share from discontinued operations (in dollars per share)	$ 0	$ (1.56)	$ 0	$ (4.52)
Weighted average shares outstanding
Weighted average number common shares, basic (shares)	25,077,000	24,867,000	25,024,000	24,804,000
Weighted average number common shares, diluted (shares)	29,330,000	24,995,000	29,278,000	24,984,000
Cash dividends declared per common share (usd per share)	$ 0.17	$ 0.17	$ 0.51	$ 0.51