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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Nov. 30, 2017 | Nov. 30, 2016
Income Tax Disclosure Additional Details [Table] [Line Items] |  |
Earnings before income taxes | $ 6,830 | $ 1,967
Income tax expense (benefit) | $ 1,604 | $ (2,998)
Effective Income Tax Rate Reconciliation, Percent | 23.50% | (152.40%)
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 35.00% |
Income tax benefit related to discrete income tax adjustment |  | $ 2,900
Foreign Destination [Member] |  |
Income Tax Disclosure Additional Details [Table] [Line Items] |  |
Percent of Revenue (excluding impairment charge) from foreign jurisdictions | 80.00% | 80.00%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent | (12.20%) | (22.40%)

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