Equity Investment - Equity Method Investment, Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Aug. 31, 2020	May 31, 2020	Aug. 31, 2019	May 31, 2019	Aug. 31, 2020	Aug. 31, 2019	Feb. 29, 2020	Feb. 28, 2019
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Current Assets	$ 292,213				$ 292,213		$ 217,820
Equity Method Investment, Summarized Financial Information, Current Liabilities	129,531				129,531		71,022
Equity Method Investment Summarized Financial Information, Equity	348,484	$ 339,588	$ 382,870	$ 391,984	348,484	$ 382,870	348,229	$ 395,101
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)	38,076		23,769		58,051	49,778
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	6,555	$ (9,105)	$ (7,164)	$ (2,372)	(2,550)	(9,536)
ASA Electronics, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Current Assets	48,675				48,675		47,738
Equity Method Investment, Summarized Financial Information, Noncurrent Assets	5,130				5,130		5,453
Equity Method Investment, Summarized Financial Information, Current Liabilities	9,195				9,195		9,343
Equity Method Investment Summarized Financial Information, Equity	$ 44,610				44,610		$ 43,848
Equity Method Investment, Summarized Financial Information, Revenue					40,858	50,281
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss)					14,150	15,542
Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations					5,345	5,227
Equity Method Investment, Summarized Financial Information, Net Income (Loss)					$ 5,490	$ 5,410