Quarterly report pursuant to Section 13 or 15(d)

Note 5 - Cash, Cash Equivalents and Investments (Tables)

v3.23.1
Note 5 - Cash, Cash Equivalents and Investments (Tables)
 3 Months Ended
Mar. 31, 2023
Notes Tables  
Cash, Cash Equivalents and Investments [Table Text Block]
   

Total

    

Quoted prices in active markets (Level 1)

    

Significant other observable inputs (Level 2)

    

Significant unobservable inputs (Level 3)

  

March 31, 2023

                                

Money market funds, included in cash equivalents

   $ 27,009     $ 27,009     $ —     $ —  

Investments - US treasuries

     2,377       2,377       —       —  

Investments - Corporate bonds

     6,260       —       6,260       —  

Total

   $ 35,646     $ 29,386     $ 6,260     $ —  
   

Total

    

Quoted prices in active markets (Level 1)

    

Significant other observable inputs (Level 2)

    

Significant unobservable inputs (Level 3)

  

December 31, 2022

                                

Money market funds, included in cash equivalents

   $ 17,618     $ 17,618     $ —     $ —  

Investments - US treasuries

     3,573       3,573       —       —  

Investments - Foreign treasuries

     896       896       —       —  

Investments - Asset-backed securities

     499       —       499       —  

Investments - Corporate bonds

     15,566       —       15,566       —  

Total

   $ 38,152     $ 22,087     $ 16,065     $ —  
Debt Securities, Available-for-Sale [Table Text Block]
   

Contractual maturity

                                 
   

(in days)

    

Amortized Cost

    

Unrealized gains

    

Unrealized losses

    

Fair Value

  

Investments

                                      

US treasuries

   20-111     $ 2,377     $ —     $ —     $ 2,377  

Corporate bonds

   4-138       6,263       —       (3 )     6,260  

Total

         $ 8,640     $ —     $ (3 )   $ 8,637