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Note 9 - Intangible Assets, Net (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
  

September 30, 2023

 

 

Gross

  

Accumulated

  

Intangible

 

 

Amount

  

amortization

  

assets, net

 

Patents

 $9,363  $(5,805) $3,558 

Trademarks

  95   (27)  68 

Total intangible assets

 $9,458  $(5,832) $3,626 
  

December 31, 2022

 

 

Gross

  

Accumulated

  

Intangible

 

 

Amount

  

amortization

  

assets, net

 

Patents

 $8,994  $(5,330) $3,664 

Trademarks

  56   (21)  35 

Total intangible assets

 $9,050  $(5,351) $3,699 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

2024

 $668 

2025

  668 

2026

  668 

2027

  668 

2028

  668 

2029 and thereafter

  286 
  $3,626