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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands | Aug. 31, 2016 | Aug. 31, 2015
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Income Taxes [Abstract] |  |
Deferred Tax Assets, Deferred revenue | $ 1,501 | $ 1,411
Deferred Tax Assets, Net operating loss carryforwards | 1,174 | 1,703
Deferred Tax Assets, Defined benefit pension plan | 2,917 | 2,754
Deferred Tax Assets, Share-based compensation | 1,839 | 1,814
Deferred Tax Assets, State tax credits |  | 87
Deferred Tax Assets, Inventory | 1,758 | 1,883
Deferred Tax Assets, Warranty | 2,708 | 2,672
Deferred Tax Assets, Vacation | 356 | 181
Deferred Tax Assets, Accrued expenses and allowances | 16,289 | 12,135
Deferred Tax Assets, Other | 378 | 527
Gross deferred tax assets | 28,920 | 25,167
Deferred Tax Assets, Valuation allowance | (2,825) | (2,949)
Net deferred tax assets | 26,095 | 22,218
Deferred Tax Liabilities, Intangible assets | (16,426) | (17,514)
Deferred Tax Liabilities, Property, plant and equipment | (6,605) | (6,687)
Deferred Tax Liabilities, Inventory | (63) | (83)
Total deferred tax liabilities | (23,094) | (24,284)
Net deferred tax assets (liabilities) | $ 3,001 |
Net deferred tax assets (liabilities) |  | $ (2,066)

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