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Goodwill And Other Intangible Assets (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Goodwill And Other Intangible Assets [Abstract]      
Amortization expense $ 4,700 $ 4,000 $ 2,800
Goodwill impairment $ 0 $ 0 $ 0