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Financial Derivatives (Schedule Of Financial Derivatives) (Details) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2014
Aug. 31, 2013
Derivatives Designated As Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Total derivatives $ 660 $ (107)
Derivatives Designated As Hedging Instruments [Member] | Other Current Assets [Member] | Foreign Currency Forward Contracts [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative assets 900 151
Derivatives Designated As Hedging Instruments [Member] | Other Current Liabilities [Member] | Foreign Currency Forward Contracts [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities (240) (258)
Derivatives Not Designated As Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Total derivatives (160) 45
Derivatives Not Designated As Hedging Instruments [Member] | Other Current Assets [Member] | Foreign Currency Forward Contracts [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative assets   78
Derivatives Not Designated As Hedging Instruments [Member] | Other Current Liabilities [Member] | Foreign Currency Forward Contracts [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative liabilities $ (160) $ (33)