Note 9 - Debt (Details) - Long-term Debt (USD $) In Thousands, unless otherwise specified	May 25, 2014	May 26, 2013
Debt Instrument [Line Items]
Debt balance	$ 34,372	$ 40,305
Less current portion	(6,055)	(5,933)
Long-term portion	28,317	34,372
Real Estate Loan [Member]
Debt Instrument [Line Items]
Debt balance	16,137	17,065
Capital Equipment Loan [Member]
Debt Instrument [Line Items]
Debt balance	9,430	11,080
Term Loan [Member]
Debt Instrument [Line Items]
Debt balance	6,000	9,000
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Debt balance	$ 2,805	$ 3,160