Net Periodic Benefit Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Other Postretirement Benefit Plan, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Foreign Defined Benefit Plan, Net Periodic Benefit Cost	$ 100
Foreign Plan Member
Defined Benefit Plan Disclosure [Line Items]
Interest cost	400	$ 400	$ 400
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	300	300	300
Foreign Defined Benefit Plan, Net Periodic Benefit Cost	200	200	300
Defined Benefit Plan, Service Cost	100	100	200
Domestic Plan Member
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1,500	1,600	1,700
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,700)	(1,700)	(1,700)
Amortization of actuarial loss	1,200	1,300	900
Foreign Defined Benefit Plan, Net Periodic Benefit Cost	$ 1,000	$ 1,200	$ 900