v3.26.1
Note 7 - Marketable Securities (Tables)
6 Months Ended
Jun. 30, 2026
Notes Tables  
Debt Securities, Available-for-Sale [Table Text Block]
  

June 30, 2026

 
  

Adjusted Cost

  

Unrealized Gains

  

Unrealized Losses

  

Fair Value

 

Level 2:

                

U.S. treasury securities

 $20,570  $1  $(9) $20,562 

Total

 $20,570  $1  $(9) $20,562 
  

December 31, 2025

 
  

Adjusted Cost

  

Unrealized Gains

  

Unrealized Losses

  

Fair Value

 

Level 2:

                

U.S. treasury securities

 $20,817  $26  $  $20,843 

Total

 $20,817  $26  $  $20,843