Note 9 - Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Nov. 26, 2016	Aug. 27, 2016
Gross Carrying Amount	$ 242,898	$ 196,787
Accumulated Amortization	161,569	158,123
Net Carrying Amount	81,329	38,664
Customer Contracts [Member]
Gross Carrying Amount	209,015	165,405
Accumulated Amortization	132,808	129,551
Net Carrying Amount	76,207	35,854
Other Intangible Assets [Member]
Gross Carrying Amount	33,883	31,382
Accumulated Amortization	28,761	28,572
Net Carrying Amount	$ 5,122	$ 2,810