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Note 6 - Incentive Stock Plan (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]

Options as of December 31, 2022

    167,561     $ 11.68       8.78  

Issued

    75,000     $ 3.65       10.00  

Forfeited

    (30,686 )   $ 9.90       8.78  

Exercised

    -     $ -       -  

Options as of September 30, 2023

    211,875     $ 9.09       8.59