Accounts And Notes Receivable (Schedule Of Accounts And Notes Receivable) (Details) - USD ($) $ in Thousands	Aug. 31, 2015	Aug. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Royalties and other trade receivables	$ 19,713	$ 18,292
Current accounts and notes receivable, gross	32,651	34,425
Allowance for doubtful accounts and notes receivable, current	(1,074)	(1,592)
Current Accounts and Notes Receivable, net	31,577	32,833
Receivables from franchisees	5,676	4,688
Receivables from advertising funds	1,571	3,646
Allowance for doubtful notes receivable	(31)	(179)
Notes receivable, net	7,216	8,155
Notes Receivable From Franchisees [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current accounts and notes receivable, gross	996	1,468
Receivable From Advertising Funds [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current accounts and notes receivable, gross	4,965	5,597
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current accounts and notes receivable, gross	$ 6,977	$ 9,068