Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies - Assumptions Used in Discounted Cash Flow Models (Details) $ in Millions	May 28, 2017 USD ($)
10% increase in revenue growth rates	$ 6.9
10% increase in expense growth rates	(1.9)
10% increase in income tax rates	(0.6)
10% increase in discount rates	$ (4.5)