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Note 11 - Line of Credit (Details Textual) - Revolving Credit Facility [Member] - USD ($)
$ in Thousands
9 Months Ended
Sep. 28, 2024
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 $ 0    
Line of Credit Facility, Remaining Borrowing Capacity $ 2,900    
Rockland Trust Company [Member]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 3,000  
Line of Credit Facility, Interest Rate During Period 8.00%