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Note 7 - Investments
9 Months Ended
Sep. 30, 2022
Notes to Financial Statements  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Note 7  Investments

 

The following table summarizes the Company’s investments as of September 30, 2022 (in thousands):

 

   

Amortized

   

Unrealized

   

Unrealized

         
   

Cost Basis

   

Gains

   

Losses

   

Fair Value

 

Marketable securities:

                               

US government

  $ 46,554     $     $ (102 )   $ 46,452  

Corporate bonds

    4,416             (10 )     4,406  

Commercial paper

    12,336             (24 )     12,312  

Certificates of deposit

    4,074             (19 )     4,055  

Total marketable securities

  $ 67,380     $     $ (155 )   $ 67,225  

 

The Company classifies its investments as available-for-sale and they consist entirely of debt securities. As of September 30, 2022, the amortized cost of investments included an immaterial amount of accrued interest. As of September 30, 2022, marketable securities were in a net unrealized loss position. Unrealized gains and losses on available-for-sale debt securities are included as a component of comprehensive loss. 

 

As of  September 30, 2022, the aggregate fair value of investments held by the Company in an unrealized loss position was $64.9 million which consisted of 28 securities. The unrealized loss was primarily driven by rising interest rates. The Company does not expect to settle the debentures at a price less than the amortized cost basis of the investment; the Company expects to recover the entire amortized cost basis of the security. In accordance with the Company’s general investment strategy, the Company does not intend to sell the investments before maturity. As of  September 30, 2022, the Company believes the cost basis for its marketable securities were recoverable in all material aspects and no credit losses were recognized in the period.

 

The Company’s investments as of September 30, 2022 mature at various dates through August 2023. The fair values of investments by contractual maturity consist of the following (in thousands):

 

   

September 30,

   

December 31,

 
   

2022

   

2021

 

Maturities within one year

  $ 67,225     $ 44,779  

Maturities after one year through three years

          675  

Total investments

  $ 67,225     $ 45,454