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Note 9 - Debt (Details) - Long-term Debt (USD $)
In Thousands, unless otherwise specified
May 26, 2013
May 27, 2012
Debt Instrument [Line Items]    
Debt balance $ 40,305 $ 47,317
Less current portion (5,933) (7,012)
Long-term portion 34,372 40,305
Real Estate Loan [Member]
   
Debt Instrument [Line Items]    
Debt balance 17,065 17,957
Real Estate Bridge Loan [Member]
   
Debt Instrument [Line Items]    
Debt balance   1,200
Capital Equipment Loan [Member]
   
Debt Instrument [Line Items]    
Debt balance 11,080 12,660
Term Note [Member]
   
Debt Instrument [Line Items]    
Debt balance 9,000 12,000
Industrial Revenue Bonds [Member]
   
Debt Instrument [Line Items]    
Debt balance $ 3,160 $ 3,500