Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Detail)

v3.8.0.1
Quarterly Financial Data (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
May 31, 2016
Feb. 29, 2016
Nov. 30, 2015
May 31, 2015
Feb. 28, 2015
Nov. 30, 2014
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Quarterly Financial Information Disclosure [Line Items]                      
Net sales                 $ 1,095,784 $ 1,149,410 $ 1,249,254
Gross profit                 379,717 403,397 461,841
Net earnings                 $ (66,213) $ (105,174) $ 19,872
Net earnings (loss) per share:                      
Basic (in dollars per share)                 $ (1.11) $ (1.78) $ 0.32
Diluted (in dollars per share)                 $ (1.11) $ (1.78) $ 0.32
Quarterly unaudited data [Member]                      
Quarterly Financial Information Disclosure [Line Items]                      
Net sales $ 275,695 $ 275,769 $ 295,427 $ 258,869 $ 265,793 $ 305,341 $ 263,289 $ 305,011      
Gross profit 96,520 96,279 102,804 87,326 93,067 107,526 91,030 108,562      
Net earnings $ (98,764) $ 17,402 $ 22,511 $ 5,074 $ 4,965 $ 21,166 $ (159,190) $ 15,448      
Net earnings (loss) per share:                      
Basic (in dollars per share) $ (1.65) $ 0.30 $ 0.38 $ 0.09 $ 0.08 $ 0.36 $ (2.70) $ 0.26      
Diluted (in dollars per share) $ (1.65) $ 0.29 $ 0.37 $ 0.08 $ 0.08 $ 0.36 $ (2.70) $ 0.26