Note 8 - Goodwill and Other Intangible Assets (Details) - Summary of Intangible Assets - USD ($) $ in Thousands	Aug. 29, 2015	Aug. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 189,378	$ 182,400
Accumulated Amortization	149,329	140,923
Net Carrying Amount	40,049	41,477
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	159,451	153,730
Accumulated Amortization	121,427	113,520
Net Carrying Amount	38,024	40,210
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	29,927	28,670
Accumulated Amortization	27,902	27,403
Net Carrying Amount	$ 2,025	$ 1,267