Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets - Additional Information(Detail)

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Goodwill and Other Intangible Assets - Additional Information(Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Feb. 28, 2015
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Goodwill [Line Items]        
Impairment charge   $ 84,353 $ 0 $ 0
Goodwill, Impairment Charge $ 78,000 78,530    
Future amortization expense, 2016   23,500    
Future amortization expense, 2017   22,500    
Future amortization expense, 2018   22,200    
Future amortization expense, 2019   22,000    
Future amortization expense, 2020   21,400    
Future amortization expense, thereafter   84,700    
Goodwill, Impaired, Accumulated Impairment Loss   $ (78,530)    
Trade Names        
Goodwill [Line Items]        
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) $ 6,400