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Note 1 - Organization, Basis of Presentation and Summary of Significant Accounting Policies (Details) - Fair Value of Stock Option, Weighted Average Assumptions Used
12 Months Ended
May 26, 2013
May 27, 2012
May 29, 2011
Fair Value of Stock Option, Weighted Average Assumptions Used [Abstract]      
Expected life (in years) 3 years 277 days 3 years 277 days 3 years 277 days
Risk-free interest rate 0.48% 0.59% 1.16%
Volatility 0.53% 0.53% 0.52%
Dividend yield 0.00% 0.00% 0.00%