Variable Interest Entity - Summary of Revenues and Expenses Included in Consolidated Statements of Operations and Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Nov. 30, 2021		Nov. 30, 2020	Nov. 30, 2021		Nov. 30, 2020
Variable Interest Entity [Line Items]
Net sales	$ 191,871		$ 201,065	$ 472,040		$ 401,084
Cost of sales	140,167		142,937	346,455		284,905
Gross profit	51,704		58,128	125,585		116,179
Selling	13,864		13,176	37,169		30,976
General and administrative	20,049		21,104	56,609		51,398
Engineering and technical support	9,706		5,676	23,824		14,942
Total operating expenses	43,906		39,980	120,881		97,586
Operating (loss) income	7,798		18,148	4,704		18,593
Interest and bank charges	(730)		(471)	(1,840)		(2,280)
Other, net	(143)		294	675		753
Total other (expense) income, net	(38,111)		1,626	(33,645)		3,021
(Loss) income before income taxes	(30,313)	[1]	19,774	(28,941)	[1]	21,614
Income tax expense	(641)		2,334	(374)		6,724
Net (loss) income	(29,672)		17,440	(28,567)		14,890
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net sales	355		343	813		703
Cost of sales	240		293	580		674
Gross profit	115		50	233		29
Selling	167		132	493		434
General and administrative	261		446	1,037		1,303
Engineering and technical support	1,526		1,178	4,654		3,427
Total operating expenses	1,954		1,756	6,184		5,164
Operating (loss) income	(1,839)		(1,706)	(5,951)		(5,135)
Interest and bank charges	(423)		(372)	(1,239)		(1,094)
Total other (expense) income, net	(423)		(372)	(1,239)		(1,094)
(Loss) income before income taxes	(2,262)		(2,078)	(7,190)		(6,229)
Net (loss) income	$ (2,262)		$ (2,078)	$ (7,190)		$ (6,229)

[1] Included within Corporate/Eliminations for the three and nine months ended November 30, 2021 is a charge of $39,444 recorded for an interim arbitration award unfavorable to the Company (see Note 24).