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Goodwill And Other Intangibles (Changes In The Carrying Amount Of Goodwill) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Goodwill And Other Intangibles [Abstract]    
Balance at beginning of year $ 77,093 $ 77,093
Goodwill acquired during the year 65
Goodwill disposed of related to the sale of Company Drive-Ins (82)
Balance at end of year $ 77,076 $ 77,093