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Intangible Assets And Goodwill (Schedule Of Allocated Goodwill To Reportable Operating Segments) (Details) - USD ($)
$ in Thousands
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2014
Goodwill [Line Items]      
Goodwill $ 19,903 $ 19,903 $ 19,641
Direct Offices [Member]      
Goodwill [Line Items]      
Goodwill 10,790    
Strategic Markets [Member]      
Goodwill [Line Items]      
Goodwill 2,930    
Education Practice [Member]      
Goodwill [Line Items]      
Goodwill 2,176    
International Licensees [Member]      
Goodwill [Line Items]      
Goodwill $ 4,007