Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 10,511	$ 3,490	$ 2,738
Charged to Expense/Against Revenue	754	11,474	4,737
Write-offs, Net of Recoveries	(3,278)	(4,453)	(3,985)
Balance at End of Year	$ 7,987	$ 10,511	$ 3,490