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Financial Derivatives (Schedule Of Derivative Instruments, Effect On Other Comprehensive Income (Loss)) (Details) (Foreign Currency Forward Contracts [Member], Net Investment Hedging [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2012
Foreign Currency Forward Contracts [Member] | Net Investment Hedging [Member]
     
Derivatives, Fair Value [Line Items]      
Foreign currency forward contracts, net of tax expense $ (53) $ (357) $ 1,677
Tax (benefit) expense $ 16 $ (286) $ 1,023