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Note 7 - Debt - Future Minimum Principal Payments of Debt (Details) - USD ($)
$ in Thousands
May 27, 2018
May 28, 2017
Fiscal year 2019 $ 5,000  
Fiscal year 2020 5,000  
Fiscal year 2021 5,000  
Fiscal year 2022 27,500  
Fiscal year 2023  
Thereafter  
Total $ 42,500 $ 47,500