Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v2.4.0.8
Fair Value Measurements - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended 12 Months Ended
Aug. 31, 2013
May 31, 2013
Aug. 31, 2012
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2013
5.625% Senior Notes
Senior Notes
Aug. 31, 2012
5.625% Senior Notes
Senior Notes
Apr. 16, 2012
5.625% Senior Notes
Senior Notes
Aug. 31, 2012
Mastervolt International Holding B.V.
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]                    
Goodwill $ 734,952,000   $ 866,412,000 $ 734,952,000 $ 866,412,000 $ 888,466,000       $ 40,000,000
Tradename                   13,600,000
Impairment charges (11,200,000) 170,000,000 62,500,000 158,817,000 62,464,000 0       62,500,000
Face amount             300,000,000   300,000,000.0  
Debt instrument, interest rate             5.625% 5.625% 5.625%  
Fair value of long-term debt             $ 300,800,000 $ 309,800,000