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Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income ) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Abstract]      
Defined benefit pension plan, net of tax of $1,396 and $1,554 $ (2,287) $ (2,547)  
Cash flow hedges, net of tax of $0 and $33   (53)  
Foreign currency translation, net of hedging activities, net of tax of $1,588 and $2,093 (29) 1,723  
Total accumulated other comprehensive loss (2,316) (877) 6,462
Definied benefit pension tax 1,396 1,554  
Cash flow hedges tax 0 33  
Foreign currency adjustment tax $ 1,588 $ 2,093