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Note 5 - Share Based Compensation (Tables)
3 Months Ended
Mar. 31, 2025
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended March 31,

 
   

2025

   

2024

 
                 

Selling, general and administrative

  $ 44,831     $ 47,642  

Research, development and engineering

    7,657       9,151  
    $ 52,488     $ 56,793