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Funded Status of Defined Benefit Pension Plans (Detail) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 28,454,000	$ 28,530,000
401(k) [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount	$ 1
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	50.00%

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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