Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Aug. 31, 2019

Notes Tables

Valuation and Qualifying Accounts Disclosure [Table Text Block]

Receivable Reserve and Billing Adjustments	Balance at Beginning of Year		Charged to Expense/ Against Revenue(1)		Write-offs, Net of Recoveries			Balance at End of Year
2019	$	3,490	$	11,474	$	(4,453	)	$	10,511
2018	$	2,738	$	4,737	$	(3,985	)	$	3,490
2017	$	1,521	$	3,381	$	(2,164	)	$	2,738