Note 15 - Segment Reporting (Details) - Summary of long-lived assets, revenues, and income before income taxes (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013		Aug. 25, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Location	$ 812,051		$ 752,854
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Location	769,121		706,379
Europe, Canada, Mexico and Nicaragua [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Location	$ 42,930	[1]	$ 46,475	[1]

[1] No country accounts for greater than 10% of total long-lived assets, revenues or income before income taxes.