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Income Taxes (Tables) | 6 Months Ended
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Feb. 28, 2021
Income Tax Disclosure [Abstract] |
Summary of U.S. Federal Statutory Income Tax Rate Compared to Actual Income Tax Expense | The U.S. federal statutory income tax rate and the Company's effective income tax rate are as follows:
| Three months ended |  | Six months ended
| February 28, 2021 |  | February 29, 2020 |  | February 28, 2021 |  | February 29, 2020
U.S. federal statutory income tax rate | 21.0 | % |  | 21.0 | % |  | 21.0 | % |  | 21.0 | %
Effective income tax rate | 26.9 | % |  | 108.9 | % |  | 28.5 | % |  | 71.0 | %

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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