Note 7 - Goodwill and Other Intangible Assets (Details) - Summary of Intangible Assets (USD $) In Thousands, unless otherwise specified	Aug. 30, 2014	Aug. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 182,400	$ 181,189
Accumulated Amortization	140,923	131,845
Net Carrying Amount	41,477	49,344
Customer Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	153,730	152,672
Accumulated Amortization	113,520	105,275
Net Carrying Amount	40,210	47,397
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,670	28,517
Accumulated Amortization	27,403	26,570
Net Carrying Amount	$ 1,267	$ 1,947