Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Aug. 31, 2023	Aug. 31, 2022
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 83,908	$ 93,469
Work in process	7,820	12,603
Finished goods and purchased parts	86,793	110,022
Total inventory value before LIFO adjustment	178,521	216,094
Less adjustment to LIFO value	(22,589)	(22,318)
Inventories, net	$ 155,932	$ 193,776