Other Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 31, 2020	Aug. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	$ 95,630	$ 94,551
Accumulated Amortization	(30,605)	(23,345)
Net	65,025	71,206
Customer lists
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	84,895	84,815
Accumulated Amortization	(23,770)	(17,609)
Net	61,125	67,206
Trademarks and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	10,735	9,736
Accumulated Amortization	(6,835)	(5,736)
Net	$ 3,900	$ 4,000