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Note 6 - Prepaid Expenses and Other Assets (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
   

June 30, 2023

   

December 31, 2022

 

Prepaid expenses

  $ 616     $ 209  

Advances to vendors

    59       42  

Total prepaid expenses and other assets

  $ 675     $ 251