Retirement Plans (Narrative) (Details) $ in Thousands	12 Months Ended
	Aug. 31, 2025 USD ($) Executive CompensationYears	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 1,300	$ 1,400	$ 1,300
Number of former executives | Executive	5
Number of highest compensation years | CompensationYears	3
Discount rate, liability	5.40%	5.10%
Discount Rate, net periodic benefit cost	5.10%	5.00%	4.10%
Actuarial loss	$ 557	$ (83)
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss	$ 200