Annual report pursuant to Section 13 and 15(d)

Earnings before Income Taxes, Including both Continuing and Discontinued Operations (Detail)

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Earnings before Income Taxes, Including both Continuing and Discontinued Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Income Tax Disclosure [Abstract]      
Income (Loss) from Continuing Operations before Income Taxes, Domestic $ 12,635 $ (19,182) $ 14,593
Income (Loss) from Continuing Operations before Income Taxes, Foreign (95,326) (111,162) 10,798
(Loss) earnings from continuing operations before income tax expense $ (82,691) $ (130,344) $ 25,391