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Note 5 - Property, Plant and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2024
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

December 31,

 
  

2024

  

2023

 
  

(in thousands)

 

Leasehold improvements

 $35  $35 

Furniture, machinery and equipment

  1,414   1,414 

Computer equipment and software

  38   38 

Total property, plant and equipment

  1,487   1,487 

Less: accumulated depreciation

  (1,476)  (1,462)

Property, plant and equipment, net

 $11  $25