Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020
Income Statement [Abstract]
Sales	$ 216,447	$ 203,372	$ 446,273	$ 416,664
Costs and Expenses
Cost of sales	161,332	157,278	333,231	328,363
Gross margin	55,115	46,094	113,042	88,301
Selling, general and administrative	28,587	26,749	55,802	54,639
Restructuring and impairment charges	0	18,693	0	18,693
Operating income	26,528	652	57,240	14,969
Interest expense	1,754	2,470	3,451	5,104
Other (income) expense, net	918	92	(51)	1,547
Income (loss) before income taxes	23,856	(1,910)	53,840	8,318
Income tax expense (benefit)	4,878	(120)	12,525	4,567
Net income (loss)	$ 18,978	$ (1,790)	$ 41,315	$ 3,751
Earnings Per Common Share
Basic earnings per share (usd per share)	$ 0.76	$ (0.07)	$ 1.65	$ 0.14
Diluted earnings per share (usd per share)	0.76	(0.07)	1.64	0.14
Cash dividends declared per common share (usd per share)	$ 0.17	$ 0.17	$ 0.34	$ 0.34