v3.26.1
Note 4 - Marketable Securities (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Fair Value, Marketable Securities Measured on a Recurring Basis [Table Text Block]
   

Fair Value Measurements Using Inputs Considered as of:

 
   

March 31, 2026

   

December 31, 2025

 
   

Total

   

Level 1

   

Level 2

   

Level 3

   

Total

   

Level 1

   

Level 2

   

Level 3

 

Government securities

  $ 38,164     $     $ 38,164     $     $ 39,421     $     $ 39,421     $  

Corporate bonds

    8,299             8,299             4,822             4,822        

Total

  $ 46,463     $     $ 46,463     $     $ 44,243     $     $ 44,243     $