Schedule II - Valuation and Qualifying Accounts - Allowance for Trade Receivables (Details) - USD ($)	12 Months Ended
Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2015
Balance at Beginning of Year	$ 1,521	$ 1,580	$ 1,662
Charged to Expense/Against Revenue	3,381	1,917	2,268
Write-offs, Net of Recoveries	2,164	1,976	2,350
Balance at End of Year	$ 2,738	$ 1,521	$ 1,580

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.

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Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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