Notes Payable and Long-Term Debt Deferred Purchase Price (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Deferred Purchase Price [Abstract]
Deferred Purchase Price Receivable	$ 0	$ 548,602
Deferred Purchase Price Receivable, Cash Collections	(10,961)
Transfer of receivables	(386,900)
Monthly Settlements, Net	(169,827)
Fair value adjustment	$ 19,086