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Note 6 - Prepaid Expenses (Tables)
6 Months Ended
Jun. 30, 2025
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
   

June 30,

   

December 31,

 
   

2025

   

2024

 

Shares issued for prepaid services

  $ 658     $ 417  

Prepaid expenses

    625       280  

Total (current)

  $ 1,283     $ 697  
                 

Shares issued for prepaid services

  $ 584     $ 974  
Prepaid expenses     416       683  

Total (non-current)

  $ 1,000     $ 1,657