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Note 5 - Inventory (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

June 30,

   

December 31,

 
   

2024

   

2023

 

Raw materials and supplies

  $ 144     $ 1,027  

Finished goods

    760       2,477  

Less: Reserve for excess and obsolete inventory

    (204 )     (627 )

Inventory, net of reserves, from discontinued operations

          (2,313 )

Total inventory, net

  $ 700     $ 564