Nature Of Operations And Summary Of Significant Accounting Policies (Property And Equipment) (Details) - USD ($) $ in Thousands	Aug. 31, 2024	Aug. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 68,578	$ 70,940
Less accumulated depreciation	(59,842)	(60,901)
Property and equipment	8,736	10,039
Land And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,312	1,312
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	28,240	30,038
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	401	495
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,263	28,948
Furniture, Fixtures, And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,362	$ 10,147