v3.26.1
Note 9 - Patents and Trademarks, Net (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Intangible Asset, Finite-Lived [Table Text Block]
  

June 30,

  

December 31,

 
  

2026

  

2025

 
         

Purchased and licensed patent rights

 $566  $566 

Internally developed patents

  1,685   1,686 

Trademarks

  148   148 

Total

  2,399   2,400 

Accumulated depreciation

  (2,385)  (2,379)

Total

 $14  $21