Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Aug. 31, 2025	Aug. 31, 2024
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 70,510	$ 84,725
Work in process	7,186	10,192
Finished goods and purchased parts	78,631	80,877
Total inventory value before LIFO adjustment	156,327	175,794
Less adjustment to LIFO value	(19,468)	(21,341)
Inventories, net	$ 136,859	$ 154,453