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Marketable Securities
 9 Months Ended
Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities

4. Marketable Securities

 

The Company has classified its marketable securities as available-for-sale securities. These securities are carried at estimated fair value with unrealized holding gains and losses included in accumulated other comprehensive loss in stockholders’ equity until realized. Gains and losses on marketable security transactions are reported on the specific-identification method. Dividend and interest income are recognized when earned.

 

The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for available-for-sale securities by major security type and class of securities at December 31, 2021 were as follows.


 

 

Amortized cost

 

 

Gross unrealized holding gains

 

 

Gross unrealized holding losses

 

 

Estimated fair value

 

December 31, 2021

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Available-for-sale securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate bonds and notes

 

$

1,434

 

 

$

8

 

 

$

(2

)

 

$

1,440

 

Municipal bonds

 

 

1,573

 

 

 

—

 

 

 

(3

)

 

 

1,570

 

Total available-for-sale securities

 

$

3,007

 

 

$

8

 

 

$

(5

)

 

$

3,010

 


There were no available-for-sale securities as of September 30, 2022.