Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Additional Information (Detail)

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Fair Value Measurement - Additional Information (Detail) (USD $)
12 Months Ended
Aug. 31, 2012
Nov. 30, 2012
Nov. 30, 2011
Aug. 31, 2012
Mastervolt International Holding B.V.
Nov. 30, 2012
5.625% Senior Notes
Aug. 31, 2012
5.625% Senior Notes
Apr. 16, 2012
5.625% Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Goodwill $ 866,412,000 $ 871,698,000   $ 40,000,000      
Tradename       13,600,000      
Impairment charge 62,500,000            
Outstanding debt, amount         300,000,000 300,000,000  
Debt instrument, interest rate   2.00% 2.00%   5.625% 5.625% 5.625%
Fair value of long-term debt         $ 310,500,000 $ 309,800,000