Other Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Goodwill [Roll Forward]
Goodwill	$ 179,976	$ 171,601	$ 172,404
Goodwill, Acquired During Period	8,906
Disposal Group, Including Discontinued Operation, Goodwill	(531)	(803)
Corporate and Other
Goodwill [Roll Forward]
Goodwill	10,574	10,574	10,574
Disposal Group, Including Discontinued Operation, Goodwill		0
Energy
Goodwill [Roll Forward]
Goodwill	9,458	552	552
Goodwill, Acquired During Period	8,906
Disposal Group, Including Discontinued Operation, Goodwill		0
Ag
Goodwill [Roll Forward]
Goodwill	159,944	160,475	$ 161,278
Disposal Group, Including Discontinued Operation, Goodwill	$ 531	$ 803