Quarterly report [Sections 13 or 15(d)]

Note 4 - Marketable Securities (Tables)

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Note 4 - Marketable Securities (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Fair Value, Marketable Securities Measured on a Recurring Basis [Table Text Block]
   

Fair Value Measurements Using Inputs Considered as of:

 
   

September 30, 2025

   

December 31, 2024

 
   

Total

   

Level 1

   

Level 2

   

Level 3

   

Total

   

Level 1

   

Level 2

   

Level 3

 

Government securities

  $ 44,522     $ —     $ 44,522     $ —     $ 12,831     $ —     $ 12,831     $ —  

Commercial paper and corporate bonds

    7,470       —       7,470       —       28,291       —       28,291       —  

Total

  $ 51,992     $ —     $ 51,992     $ —     $ 41,122     $ —     $ 41,122     $ —