Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Assets and Liabilities Included in Condensed Consolidated Balance Sheet (Detail)

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Fair Value of Financial Assets and Liabilities Included in Condensed Consolidated Balance Sheet (Detail) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2012
Aug. 31, 2011
Level 1 Valuation
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents $ 5,154 $ 1,958
Investments 1,602 1,464
Level 2 Valuation
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign currency forward contracts 945 (81)
Interest rate swap contracts   $ (4,552)