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Accounts Receivable (Activity In Allowance For Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2011
Trade Accounts Receivable [Abstract]
Beginning balance	$ 851	$ 798	$ 718
Charged to costs and expense	190	224	188
Deductions	(59)	(171)	(108)
Ending balance	$ 982	$ 851	$ 798

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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