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Note 6 - Debt - Long-term Debt (Details) - USD ($)
$ in Thousands
May. 31, 2015
May. 25, 2014
Real Estate Loan [Member]    
Long-term Debt $ 15,172 $ 16,137
Capital Equipment Loan 1 [Member]    
Long-term Debt 7,705 $ 9,430
Capital Equipment Loan 2 [Member]    
Long-term Debt 6,476  
Capital Equipment Loan 3 [Member]    
Long-term Debt 3,907  
Capital Equipment Loan 4 [Member]    
Long-term Debt 3,819  
Term Loan [Member]    
Long-term Debt 3,000 $ 6,000
Industrial Revenue Bonds [Member]    
Long-term Debt 2,440 2,805
Long-term Debt 42,519 34,372
Less current portion (8,353) (6,055)
Long-term portion $ 34,166 $ 28,317