Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.3.0.814
Fair Value Measurements - Additional Information (Detail) - 5.625% Senior Notes - Senior Notes - USD ($)
$ in Thousands
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Apr. 16, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]        
Debt instrument, interest rate 5.625%   5.625% 5.625%
Fair value of long-term debt $ 287,300 $ 315,800    
5.625% Senior Notes Carrying Value $ 288,059 $ 300,000