Note 8 - Income Taxes (Details) (USD $)	3 Months Ended	6 Months Ended
	Nov. 24, 2013	Nov. 24, 2013	Nov. 25, 2012	May 26, 2013
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 1,900,000	$ 4,300,000
Effective Income Tax Rate Reconciliation, Percent		34.00%	29.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Unrecognized Tax Benefits	1,000,000	1,000,000		1,000,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 854,000	$ 854,000		$ 807,000