Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	May 31, 2022	Aug. 31, 2021	May 31, 2021
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 93,956	$ 69,962	$ 64,087
Work in process	18,941	8,301	9,440
Finished goods and purchased parts, net	105,042	75,053	71,414
Total inventory value before LIFO adjustment	217,939	153,316	144,941
Less adjustment to LIFO value	(22,373)	(8,072)	(8,340)
Inventories, net	$ 195,566	$ 145,244	$ 136,601

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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