Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Aug. 31, 2017

Notes Tables

Valuation and Qualifying Accounts Disclosure [Table Text Block]

Receivable reserve and billing adjustments (1)	Balance at Beginning of Year		Charged to Expense/ Against Revenue		Write-offs, Net of Recoveries		Balance at End of Year
201 7	$	1,521	$	3,381	$	2,164	$	2,738
2016	$	1,580	$	1,917	$	1,976	$	1,521
2015	$	1,662	$	2,268	$	2,350	$	1,580