Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement (Schedule Of Fair Value Of Financial Assets And Liabilities Included In Condensed Consolidated Balance Sheet) (Details)

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Fair Value Measurement (Schedule Of Fair Value Of Financial Assets And Liabilities Included In Condensed Consolidated Balance Sheet) (Details) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2011
Aug. 31, 2011
Level 1 [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 1,519 $ 1,958
Investments 1,466 1,464
Level 2 [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign currency derivative investments 28 (81)
Interest rate swap contracts $ (4,266) $ (4,552)