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Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Aug. 31, 2021 | Aug. 31, 2020
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Income Tax Disclosure [Abstract] |  |
Deferred Tax Assets, Accrued expenses | $ 10,172 | $ 10,376
Deferred Tax Assets, Warranty | 3,096 | 2,439
Deferred Tax Assets, Defined benefit pension plan | 1,626 | 1,767
Deferred Tax Assets, Inventory | 2,403 | 2,362
Deferred Tax Assets, Share-based compensation | 1,197 | 1,185
Deferred Tax Assets, Vacation | 749 | 780
Deferred Tax Assets, Net operating loss and capital loss carryforwards | 2,245 | 3,009
Deferred Tax Assets, Deferred revenue | 1,565 | 2,282
Deferred Tax Assets, Allowance for doubtful accounts | 870 | 683
Deferred Tax Assets, Other | 1,169 | 2,233
Gross deferred tax assets | 25,092 | 27,116
Deferred Tax Assets, Valuation allowance | (1,091) | (3,218)
Net deferred tax assets | 24,001 | 23,898
Deferred Tax Liabilities, Intangible assets | (5,607) | (6,054)
Deferred Tax Liabilities, Property, plant and equipment | (11,113) | (8,798)
Total deferred tax liabilities | (16,720) | (14,852)
Net deferred tax assets | $ 7,281 | $ 9,046

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