Goodwill and Other Intangible Assets (Carrying Amount in Goodwill by Segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 67,968	$ 68,004
Foreign currency translation	(838)	(36)
Goodwill, Ending Balance	67,130	67,968
Irrigation [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	51,811	51,802
Foreign currency translation	(64)	9
Goodwill, Ending Balance	51,747	51,811
Infrastructure [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	16,157	16,202
Foreign currency translation	(774)	(45)
Goodwill, Ending Balance	$ 15,383	$ 16,157