Other Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	$ 94,990	$ 95,630
Accumulated Amortization	(36,595)	(30,605)
Net	58,395	65,025
Customer lists
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	84,565	84,895
Accumulated Amortization	(29,254)	(23,770)
Net	55,311	61,125
Trademarks and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	10,425	10,735
Accumulated Amortization	(7,341)	(6,835)
Net	$ 3,084	$ 3,900