Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities (Tables)

v3.23.1
Note 4 - Marketable Securities (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Fair Value, Marketable Securities Measured on a Recurring Basis [Table Text Block]
    Fair Value Measurements Using Inputs Considered as of:  
    March 31, 2023     December 31, 2022  
   

Total

   

Level 1

   

Level 2

    Level 3     Total    

Level 1

   

Level 2

    Level 3  

Commercial paper and corporate bonds

  $ 12,892     $     $ 12,892     $     $ 14,209     $     $ 14,209     $  

Government securities

    13,616             13,616             14,565             14,565        

Total

  $ 26,508     $     $ 26,508     $     $ 28,774     $     $ 28,774     $