Discontinued Operations & Other Divestiture Charges Divestitures Activities Discontinued Operations - Loss From Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Earnings (Loss) from Discontinued Operations	$ (1,756)	$ 1,988	$ (6,007)	$ 958
Engineered Components & Systems [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Loss Before Income Tax Benefit	(933)	3,777	(22,819)	2,610
Disposal Group, Including Discontinued Operation, Income Tax Benefit	823	1,789	(16,812)	1,652
Earnings (Loss) from Discontinued Operations	(1,756)	1,988	(6,007)	958
Disposal Group, Including Discontinued Operation, Revenue	0	112,119	67,010	246,099
Disposal Group, Including Discontinued Operation, Costs of Goods Sold	0	85,948	49,749	185,232
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)	0	26,171	17,261	60,867
Disposal Group, Including Discontinued Operation, Selling, Administrative and Engineering Expenses	619	17,312	11,451	37,383
Disposal Group, Including Discontinued Operation, Amortization of Intangible Assets	0	1,587	0	3,569
Disposal Group, Including Discontinued Operation, Restructuring (Benefit) Charges	0	14	(11)	446
Disposal Group, Including Discontinued Operation, Impairment & Divestiture Charges	314	3,344	28,730	16,319
Disposal Group, Including Discontinued Operation, Operating Income (Loss)	(933)	3,914	(22,909)	3,150
Disposal Group, Including Discontinued Operation, Financing Costs (Benefits)	0	(4)	14	(7)
Disposal Group, Including Discontinued Operation, Other Expense	$ 0	$ 141	$ 104	$ 547