Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021
Income Statement [Abstract]
Net sales	$ 111,233	$ 100,451	$ 218,900	$ 197,381
Type of revenue [extensible list]	Net sales	Net sales	Net sales	Net sales
Cost of goods sold	$ 76,014	$ 71,550	$ 149,677	$ 139,294
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	$ 35,219	$ 28,901	$ 69,223	$ 58,087
Selling, general and administrative	17,942	18,095	35,624	37,010
(Gain) loss from disposal of assets	0	1	0	(276)
Income from operations	17,277	10,805	33,599	21,353
Other expense
Interest expense	0	(2)	0	(4)
Other, net	(342)	(146)	(514)	(258)
Total other expense	(342)	(148)	(514)	(262)
Earnings before income taxes	16,935	10,657	33,085	21,091
Income tax expense	4,741	3,197	9,264	6,327
Net earnings	$ 12,194	$ 7,460	$ 23,821	$ 14,764
Weighted average common shares outstanding
Basic	25,797,097	26,080,121	25,805,419	26,055,056
Diluted	25,858,811	26,170,396	25,867,504	26,146,421
Earnings per share
Basic	$ 0.47	$ 0.29	$ 0.92	$ 0.57
Diluted	0.47	0.29	0.92	0.57
Cash dividends per share	$ 0.250	$ 0.250	$ 0.500	$ 0.475