Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities

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Note 4 - Marketable Securities
3 Months Ended
Mar. 31, 2022
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 Using Inputs Considered as of:  
    March 31, 2022        December 31, 2021  
    Total     Level 1     Level 2     Level 3     Total     Level 1     Level 2     Level 3  

Government securities

  $ 28,041     $     $ 28,041     $     $ 29,421     $     $ 29,421     $  

Commercial paper and corporate bonds

    9,974             9,974             10,984             10,984        

Total

  $ 38,015     $     $ 38,015     $     $ 40,405     $     $ 40,405     $  

 

Accrued interest receivable on available-for-sale securities is included in amounts receivable and was $166,000 and $130,000 as of March 31, 2022 and December 31, 2021, respectively.

 

There were no transfers of assets between Level 1 and Level 2 of the fair value measurement hierarchy during the three months ended March 31, 2022.

 

Under the terms of the Company’s investment policy, purchases of marketable securities are limited to investment grade governmental and corporate obligations and bank certificates of deposit 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 March 31, 2022 and December 31, 2021.