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Note 6 - Debt - Future Minimum Principal Payments of Debt (Details) - USD ($)
$ in Thousands
May 29, 2016
May 31, 2015
GE [Member]    
FY 2017 $ 1,431  
FY 2018 1,474  
FY 2019 1,518  
FY 2020 1,564  
FY 2021 1,613  
Thereafter 14,189  
Total 21,789  
M and E Loans [Member]    
FY 2017 4,686  
FY 2018 4,829  
FY 2019 4,975  
FY 2020 5,541  
FY 2021 3,679  
Thereafter  
Total 23,710  
Term Loan [Member]    
FY 2017 1,541  
FY 2018 1,585  
FY 2019 1,631  
FY 2020 1,678  
FY 2021 663  
Thereafter  
Total 7,098  
Industrial Revenue Bonds [Member]    
FY 2017 390  
FY 2018 400  
FY 2019 410  
FY 2020 425  
FY 2021 440  
Thereafter  
Total 2,065 $ 2,440
FY 2017 8,048  
FY 2018 8,288  
FY 2019 8,534  
FY 2020 9,208  
FY 2021 6,395  
Thereafter 14,189  
Total $ 54,662 $ 42,519