Divestiture Activities- Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Oct. 31, 2019	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Disposal Group, Including Discontinued Operations [Line Items]
Impairment and divestiture (benefit) charges		$ 0	$ 0	$ 100
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current [Abstract]
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax				$ 6,100
Engineered Components & Systems [Member] [Domain]
Disposal Group, Including Discontinued Operations [Line Items]
Disposal Date	Oct. 31, 2019