Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	May 31, 2024	Aug. 31, 2023	May 31, 2023
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 83,750	$ 83,908	$ 82,323
Work in process	13,235	7,820	12,720
Finished goods and purchased parts, net	96,295	86,793	95,847
Total inventory value before LIFO adjustment	193,280	178,521	190,890
Less adjustment to LIFO value	(21,758)	(22,589)	(24,131)
Inventories, net	$ 171,522	$ 155,932	$ 166,759