Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities (Tables)

v3.22.2.2
Note 4 - Marketable Securities (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Fair Value, Marketable Securities Measured on a Recurring Basis [Table Text Block]
    Fair Value Measurements Using Inputs Considered as of:  
    September 30, 2022         December 31, 2021  
   

Total

   

Level 1

   

Level 2

   

Level 3

    Total    

Level 1

   

Level 2

    Level 3  

Commercial paper and corporate bonds

  $ 18,779     $     $ 18,779     $     $ 29,421     $     $ 29,421     $  

Government securities

    14,534             14,534             10,984             10,984        

Total

  $ 33,313     $     $ 33,313     $     $ 40,405     $     $ 40,405     $