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Note 5 - Prepaid and Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
  

As of December 31,

 
  

2024

  

2023

 

Prepaid expenses

 $966  $2,386 

Advances to suppliers

     79 

Receivable for issuance of common stock

  1,679    

Other

  61   52 

Total prepaid and other current assets

 $2,706  $2,517