Note 5 - Fair Value Measurements (Details) - Non-recurring Fair Value Measurements Related to Impaired Property and Equipment (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 20, 2013	Nov. 21, 2012
Continuing Operations
Level	$ (51)	$ 242
Company Owned Restaurants [Member] | Continuing Operations [Member] | Fair Value, Inputs, Level 3 [Member]
Continuing Operations
Level	1,038
Company Owned Restaurants [Member] | Continuing Operations [Member]
Continuing Operations
Balance	1,038
Total Impairment	(430)
Corporate Assets [Member] | Discontinued Operations [Member] | Fair Value, Inputs, Level 3 [Member]
Continuing Operations
Level	1,222
Corporate Assets [Member] | Discontinued Operations [Member]
Continuing Operations
Balance	1,222
Total Impairment	$ (56)