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Note 6 - Long-term Debt (Tables)
 9 Months Ended
Sep. 30, 2023
Notes Tables  
Convertible Debt [Table Text Block]
  

September 30,

2023

  

December 31,

2022

 

Convertible note

 $-   - 

Less: unamortized debt issuance costs

  -   - 

Convertible note payable

 $-  $- 
         

Current portion of convertible note payable

  -   - 

Convertible note payable, less current portion

  -   - 

Convertible note payable

 $-  $- 
Schedule of Debt [Table Text Block]
  

September 30,

2023

  

December 31,

2022

 

Senior Promissory Notes

 $6,000,000   6,000,000 

Less: unamortized debt discount

  (1,455,127

)

  (519,686

)

Senior Promissory Notes payable

 $4,544,873  $5,480,314 
         

Current portion of Senior Promissory Notes payable

  -   - 

Senior Promissory Notes payable, less current portion

  4,544,873   5,480,314 

Senior Promissory Notes payable

 $4,544,873  $5,480,314