Annual report pursuant to Section 13 and 15(d)

Note 4 - Marketable Securities

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Note 4 - Marketable Securities
12 Months Ended
Dec. 31, 2021
Notes to Financial Statements  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4.         Marketable Securities

 

The available-for-sale marketable securities are primarily comprised of investments in commercial paper, corporate bonds and government securities and consist of the following, measured at fair value on a recurring basis (in thousands):

 

           

Fair Value Measurements as of December 31, 2021

Using Inputs Considered as

 
   

Fair Value

   

Level 1

   

Level 2

   

Level 3

 

Commercial paper and corporate bonds

  $ 29,421     $     $ 29,421     $  

Government securities

    10,984             10,984        

Total marketable securities

  $ 40,405     $     $ 40,405     $  

 

           

Fair Value Measurements as of December 31, 2020

Using Inputs Considered as

 
   

Fair Value

   

Level 1

   

Level 2

   

Level 3

 

Commercial paper and corporate bonds

  $ 10,678     $     $ 10,678     $  

Bank certificates of deposit

    496             496        

Government securities

    8,924             8,924        

Total marketable securities

  $ 20,098     $     $ 20,098     $  

 

Accrued interest receivable on available-for-sale securities was $130,000 and $34,000 for the years ended December 31, 2021 and 2020, respectively, and is included in amounts receivable.

 

There were no transfers of assets between Level 1 and Level 2 of the fair value measurement hierarchy during the year ended December 31, 2021.

 

Under the terms of the Company’s investment policy, purchases of marketable securities are limited to investment grade governmental and corporate obligations with a primary objective of principal preservation. Maturities of individual securities are less than one year and the amortized cost of all securities approximated fair value as of December 31, 2021.