Net Periodic Benefit Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
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	$ 352	$ 344	$ 306
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	$ 4	$ 4	$ (3)
Amortization of actuarial loss	24	21	10
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	0	37
Foreign Defined Benefit Plan, Net Periodic Benefit Cost	176	261	171
Defined Benefit Plan, Service Cost	71	144	60
Domestic Plan Member
Defined Benefit Plan Disclosure [Line Items]
Interest cost	1,565	1,716	1,694
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,694)	(1,743)	(1,984)
Amortization of actuarial loss	1,349	928	878
Foreign Defined Benefit Plan, Net Periodic Benefit Cost	$ 1,220	$ 901	$ 588