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Note 8 - Revolving Line of Credit (Details Textual) - Revolving Credit Facility [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 30, 2024
Apr. 01, 2023
May 01, 2023
May 31, 2020
Massachusetts Business Development Corporation [Member]        
Line of Credit Facility, Maximum Borrowing Capacity       $ 3,000
Long-term Line of Credit, Total $ 0      
Line of Credit Facility, Remaining Borrowing Capacity 3,000      
Interest Expense $ 0 $ 0    
Rockland Trust Company [Member]        
Line of Credit Facility, Maximum Borrowing Capacity     $ 3,000  
Line of Credit Facility, Interest Rate During Period 8.50%