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Goodwill And Other Intangibles (Tables)
12 Months Ended
Aug. 31, 2012
Goodwill And Other Intangibles [Abstract]  
Changes In The Carrying Amount Of Goodwill
    2012     2011  
Balance at beginning of year $ 81,625   $ 82,089  
Goodwill acquired during the year       427  
Goodwill disposed of related to the sale of Company Drive-Ins   (4,628 )   (891 )
Balance at end of year $ 76,997   $ 81,625