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Note 4 - Inventories (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

September 30, 2024

   

December 31, 2023

 
   

(unaudited)

         

Raw materials

  $ 181     $ 405  

Work in-process

    65       159  

Finished goods

    12       19  

Total inventory, net

  $ 258     $ 583