Income Tax Expense from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Currently payable:
Currently payable, Federal	$ 10,400	$ 15,000	$ 10,100
Currently payable, Foreign	10,600	12,200	11,600
Currently payable, State	1,300	800	1,200
Currently payable	22,300	28,000	22,900
Deferred:
Deferred, Federal	5,200	100	(1,100)
Deferred, Foreign	1,100	(500)	2,600
Deferred, State	(800)	400	(1,100)
Benefit for deferred income taxes	5,500	0	400
Income tax expense (benefit)	27,800	28,000	$ 23,300
Deferred Tax Assets, Net	$ 1,200	$ 7,500