Quarterly report pursuant to Section 13 or 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
Feb. 28, 2013
Aug. 31, 2012
Level 1 Valuation:
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents $ 1,132 $ 5,154
Investments 1,714 1,602
Level 2 Valuation:
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign currency derivatives $ (517) $ 945