Equity Investment - Equity Method Investment, Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Nov. 30, 2020	Aug. 31, 2020	May 31, 2020	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Nov. 30, 2020	Nov. 30, 2019	Feb. 29, 2020	Feb. 28, 2019
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Current Assets	$ 333,851						$ 333,851		$ 217,820
Equity Method Investment, Summarized Financial Information, Current Liabilities	170,817						170,817		71,022
Equity Method Investment Summarized Financial Information, Equity	366,530	$ 348,484	$ 339,588	$ 383,017	$ 382,870	$ 391,984	366,530	$ 383,017	348,229	$ 395,101
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)	58,128			31,464			116,179	81,242
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	17,440	$ 6,555	$ (9,105)	$ 1,367	$ (7,164)	$ (2,372)	14,890	(8,169)
ASA Electronics, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Current Assets	49,755						49,755		47,738
Equity Method Investment, Summarized Financial Information, Noncurrent Assets	4,755						4,755		5,453
Equity Method Investment, Summarized Financial Information, Current Liabilities	10,146						10,146		9,343
Equity Method Investment Summarized Financial Information, Equity	$ 44,364						44,364		$ 43,848
Equity Method Investment, Summarized Financial Information, Revenue							67,940	75,962
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)							21,514	23,345
Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations							8,761	7,083
Equity Method Investment, Summarized Financial Information, Net Income (Loss)							$ 9,012	$ 7,344