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Inventories (Schedule Of Inventories) (Details) - USD ($) $ in Thousands | Nov. 30, 2018 | Aug. 31, 2018 | Nov. 30, 2017
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Inventory Disclosure [Abstract] |  |  |
Raw materials and supplies | $ 40,781 | $ 36,316 | $ 34,410
Work in process | 9,601 | 9,176 | 10,074
Finished goods and purchased parts | 46,925 | 40,197 | 55,590
Total inventory value before LIFO adjustment | 97,307 | 85,689 | 100,074
Less adjustment to LIFO value | (8,395) | (6,456) | (6,080)
Inventories, net | $ 88,912 | $ 79,233 | $ 93,994

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