Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Income Statement [Abstract]
Net sales	$ 110,245	$ 102,968	$ 329,145	$ 300,349
Type of revenue [extensible list]	Net sales	Net sales	Net sales	Net sales
Cost of goods sold	$ 76,768	$ 73,768	$ 226,445	$ 213,062
Type of cost, good or service [extensible list]	Cost of goods sold	Cost of goods sold	Cost of goods sold	Cost of goods sold
Gross profit	$ 33,477	$ 29,200	$ 102,700	$ 87,287
Selling, general and administrative	17,292	17,513	52,916	54,523
(Gain) loss from disposal of assets	15	1	15	(275)
Income from operations	16,170	11,686	49,769	33,039
Other expense
Interest expense	0	(3)	0	(7)
Other, net	(496)	(878)	(1,010)	(1,136)
Total other expense	(496)	(881)	(1,010)	(1,143)
Earnings before income taxes	15,674	10,805	48,759	31,896
Income tax expense	4,388	3,242	13,652	9,569
Net earnings	$ 11,286	$ 7,563	$ 35,107	$ 22,327
Weighted average common shares outstanding
Basic	25,809,581	26,020,210	25,812,216	26,053,898
Diluted	25,888,815	26,020,210	25,892,873	26,151,480
Earnings per share
Basic	$ 0.44	$ 0.29	$ 1.36	$ 0.86
Diluted	0.44	0.29	1.36	0.85
Cash dividends per share	$ 0.250	$ 0.250	$ 0.750	$ 0.725