Note 8 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets - USD ($) $ in Thousands	12 Months Ended
	Aug. 29, 2015	Aug. 30, 2014
Note 8 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 10,272	$ 1,404
Goodwill
Total intangible assets and goodwill acquired	$ 18,074	$ 2,724
Customer Contracts [Member]
Note 8 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets [Line Items]
Intangible assets acquired	$ 6,199	$ 1,141
Intangible assets acquired, weighted average life in years	14 years 328 days	12 years 328 days
Other Intangible Assets [Member]
Note 8 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets [Line Items]
Intangible assets acquired	$ 1,603	$ 179
Intangible assets acquired, weighted average life in years	5 years 109 days	6 years 255 days