Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2017	Feb. 29, 2016
Income Tax Disclosure Additional Details [Table] [Line Items]
Asset Impairment Charges	$ 0	$ 186,511	$ 0	$ 186,511
Asset Impairment Charge Net of Income Tax Benefit				169,100
Earnings (loss) before income taxes	5,274	(179,216)	7,241	(161,581)
Income tax expense (benefit)	$ 200	$ (20,026)	$ (2,798)	$ (17,839)
Effective Income Tax Rate Reconciliation, Percent	3.80%	11.20%	(38.60%)	11.00%
Document Period End Date			Feb. 28, 2017
Adjusted Effective Tax Rate	3.80%	(35.60%)	(38.60%)	(1.60%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent			21.20%	19.60%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent			19.40%	10.10%
Foreign Destination [Member]
Income Tax Disclosure Additional Details [Table] [Line Items]
Percent of Revenue (excluding impairment charge) from foreign jurisdictions			85.00%	85.00%