Variable Interest Entity - Summary of Revenues and Expenses Included in Consolidated Statements of Operations and Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2022	May 31, 2021
Variable Interest Entity [Line Items]
Net sales	$ 128,732	$ 137,060
Cost of sales	95,493	100,365
Gross profit	33,239	36,695
Selling	12,285	11,467
General and administrative	19,130	18,676
Engineering and technical support	8,389	6,232
Total operating expenses	39,940	37,051
Operating loss	(6,701)	(356)
Interest and bank charges	(730)	(528)
Other, net	(2,110)	442
Total other (expense) income, net	(2,238)	2,637
(Loss) income before income taxes	(8,939)	2,281
Income tax expense	(1,092)	484
Net (loss) income	(7,847)	1,797
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net sales	103	205
Cost of sales	78	163
Gross profit	25	42
Selling	165	163
General and administrative	373	344
Engineering and technical support	869	1,487
Total operating expenses	1,407	1,994
Operating loss	(1,382)	(1,952)
Interest and bank charges	(433)	(401)
Total other (expense) income, net	(433)	(401)
(Loss) income before income taxes	(1,815)	(2,353)
Income tax expense		0
Net (loss) income	$ (1,815)	$ (2,353)