U.S. Pension Plan Investment Allocations by Asset Category (Detail) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2022
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 28,454	$ 28,530
Percentage of fair value of pension plan assets	100.00%	100.00%
Foreign Plan Member
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 6,495	$ 6,195	$ 6,208
Defined Benefit Plan, Plan Assets, Benefits Paid	261	469
Fixed Income Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 15,415	$ 15,928
Percentage of fair value of pension plan assets	54.20%	55.80%
Fixed Income Securities | Corporate Bond Securities | Fair Value, Inputs, Level 2
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 0	$ 0
Percentage of fair value of pension plan assets	0.00%	0.00%
Fixed Income Securities | Mutual Funds | Fair Value, Inputs, Level 1
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 12,095	$ 11,269
Percentage of fair value of pension plan assets	42.50%	39.50%
Fixed Income Securities | US Treasury Securities | Fair Value, Inputs, Level 2
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 3,320	$ 4,659
Percentage of fair value of pension plan assets	11.70%	16.30%
Cash and cash equivalents | Fair Value, Inputs, Level 1
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 0	$ 51
Percentage of fair value of pension plan assets	0.00%	0.20%
Equity Securities | Mutual Funds | Fair Value, Inputs, Level 1
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 12,993	$ 12,511
Percentage of fair value of pension plan assets	45.60%	43.90%
Income Receivable
Schedule of Pension Plan Assets by Fair Value [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 46	$ 40
Percentage of fair value of pension plan assets	0.20%	0.10%