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Income Taxes Income Taxes (Tables) | 6 Months Ended
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Feb. 28, 2017
Income Tax Disclosure [Abstract] |
Income Tax Effective Tax Rate [Table Text Block] |
| Three Months Ended |  | Six Months Ended
| February 28, 2017 |  | February 29, 2016 |  | February 28, 2017 |  | February 29, 2016
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 | 3.8 | % |  | 11.2 | % |  | (38.6 | )% |  | 11.0 | %
Adjusted effective income tax rate (1) | 3.8 | % |  | (35.6 | )% |  | (38.6 | )% |  | (1.6 | )%

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- Definition [Table Text Block] for Income Tax Effective Tax Rate [Table] + References No definition available. + Details
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- References No definition available. + Details
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