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Earnings before Income Taxes, Including both Continuing and Discontinued Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Income Tax Disclosure [Abstract]      
(Loss) Earnings from Continuing Operations before Income Taxes, Domestic $ (715) $ 5,337 $ (10,023)
Earnings (Loss) from Continuing Operations before Income Taxes, Foreign 19,439 13,859 (107,866)
Earnings (loss) before income tax expense (benefit) $ 18,724 $ 19,196 $ (117,889)