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Note 12 - Segment Reporting (Tables)
3 Months Ended
Mar. 29, 2025
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
      March 29, 2025       March 30, 2024  

Product sales

  $ 7,505,921     $ 5,912,634  
                 

Cost of product sales

    6,274,920       5,006,324  

Gross profit

    1,231,001       906,310  
                 

Selling, general, and administrative expenses

    1,101,350       1,165,922  

Income (loss) from operations

    129,651       (259,612 )
                 

Other income

    50,476       79,171  

Income (loss) before income tax

    180,127       (180,441 )

Income tax provision (benefit)

    84,165       (37,288 )

Net income (loss)

  $ 95,962     $ (143,153 )