Note 7 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Aug. 30, 2014	Aug. 31, 2013
Note 7 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 1,404	$ 14,448
Goodwill
Total intangible assets and goodwill acquired	2,724	23,326
Customer Contracts [Member]
Note 7 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets [Line Items]
Intangible assets acquired	1,141	8,146
Intangible assets acquired, weighted average life in years	12 years 328 days	15 years
Other Intangible Assets [Member]
Note 7 - Goodwill and Other Intangible Assets (Details) - Goodwill and Other Intangible Assets [Line Items]
Intangible assets acquired	$ 179	$ 732
Intangible assets acquired, weighted average life in years	6 years 255 days	5 years