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Note 10 - Stockholders' Equity (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
  

2025

  

2024

 

Outstanding, December 31

  11,391,225   5,021,354 

Warrants issued in connection with public offering and private placement

  -   - 

Exercises and conversions

  -   - 

Outstanding, June 30

  11,391,225   5,021,354 
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
  

June 30, 2025

 
      

Weighted

     
      

Average

  

Aggregated

 
  

Number of

  

Grant-Date

  

Intrinsic

 
  

units

  

Fair value

  

Value

 
             

Outstanding, December 31, 2024

  357,903  $3.25  $- 

Granted

  376,431   1.97   - 

Vested and settled with share issuance

  (166,994)  3.19   - 

Forfeited

  (29,647)  2.19   - 

Outstanding, June 30, 2025

  537,693  $2.43  $-