Other Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	$ 47,351	$ 69,803
Accumulated Amortization	(18,013)	(36,473)
Net	29,338	33,330
Customer lists
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	40,815	46,180
Accumulated Amortization	(13,082)	(14,695)
Net	27,733	31,485
Trademarks and other intangible assets
Finite-Lived Intangible Assets [Line Items]
Carrying Amount	6,536	23,623
Accumulated Amortization	(4,931)	(21,778)
Net	$ 1,605	$ 1,845