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Note 3 - Inventories (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  September 30,  December 31, 
  

2025

  

2024

 

Raw materials

 $23  $18 

Finished goods

  11   15 

Inventories

 $34  $33