Retirement Plans (Schedule of Amounts Recognized in Balance Sheet) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Retirement Benefits [Abstract]
Benefit obligation at beginning of year	$ 4,697	$ 4,912
Interest cost	$ 226	$ 232	$ 211
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Nonoperating Income (Expense)	Nonoperating Income (Expense)
Actuarial loss (gain)	$ (557)	$ 83
Benefits paid	(474)	(530)
Benefit obligation at end of year	$ 3,892	$ 4,697	$ 4,912