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Note 8 - Long-term Debt (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Schedule of Debt [Table Text Block]
  

June 30,

  

December 31,

 
  

2025

  

2024

 

Senior promissory notes

 $6,000,000  $6,000,000 

Less: unamortized debt discount

  (664,089)  (696,437)

Total senior promissory notes payable, net

 $5,335,911  $5,303,563 
         

Current portion of senior promissory notes payable

  -   - 

Senior promissory notes payable, less current portion

  5,335,911   5,303,563 

Total senior promissory notes payable, net

 $5,335,911  $5,303,563