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Intangible Assets And Goodwill (Schedule Of Allocated Goodwill To Reportable Operating Segments) (Details) - USD ($)
$ in Thousands
Aug. 31, 2025
Aug. 31, 2024
Goodwill [Line Items]    
Goodwill $ 31,220 $ 31,220
North America Segment [Member]    
Goodwill [Line Items]    
Goodwill 19,125 22,962
Allocated Goodwill (3,837)  
International Direct Offices Segment [Member]    
Goodwill [Line Items]    
Goodwill 3,837  
Allocated Goodwill 3,837  
International Licensees [Member]    
Goodwill [Line Items]    
Goodwill 5,928 5,928
Education Division [Member]    
Goodwill [Line Items]    
Goodwill $ 2,330 $ 2,330