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Investments
 9 Months Ended
Sep. 30, 2020
Investments, Debt and Equity Securities [Abstract]  
Investments
NOTE 5. INVESTMENTS

The following tables summarize the Company’s debt securities available-for-sale investments at September 30, 2020 and December 31, 2019 (in thousands):

September 30, 2020
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Certificates of deposit$6,838 $19 $— $6,857 
U.S. Treasury securities13,435 49 — 13,484 
U.S. Agency securities— — — — 
Commercial paper9,345 1 (1)9,345 
Corporate notes and bonds20,513 19 (3)20,529 
Total$50,131 $88 $(4)$50,215 

December 31, 2019
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Certificates of deposit$5,646 $17 $— $5,663 
U.S. Treasury securities12,564 16 (1)12,579 
U.S. Agency securities4,002 — (4)3,998 
Commercial paper2,492 — (1)2,491 
Corporate notes and bonds22,711 6 (11)22,706 
Total$47,415 $39 $(17)$47,437 

The following table summarizes the maturities of the Company’s debt securities available-for-sale investments at September 30, 2020 and December 31, 2019 (in thousands):

September 30, 2020December 31, 2019
Amortized
Cost		Fair ValueAmortized
Cost		Fair Value
Due in less than 1 year$49,874 $49,958 $43,627 $43,650 
Due in 1-3 years257 257 3,788 3,787 
$50,131 $50,215 $47,415 $47,437 

Proceeds from sales of debt securities available-for-sale (including principal paydowns) for each of the three months ended September 30, 2020 and 2019 was $0, and for the nine months ended September 30, 2020 and 2019 were $0 and $13.4 million, respectively. The Company determines gains and losses of marketable securities based on specific identification of the securities sold. There were no material realized gains or losses from debt securities available-for-sale for the three and nine months ended September 30, 2020 and 2019. No material balances were reclassified out of accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2020 and 2019.

As of September 30, 2020, there were no holdings of debt securities available-for-sale of any one issuer, other than the U.S. government, in an amount greater than 10%. As of September 30, 2020 there were no debt securities available-for-sale in a material unrealized loss position.
As of September 30, 2020 the Company carried debt securities available-for-sale that were certificates of deposits, which were not covered by a rating agency or the credit rating was below the Company's minimum credit rating. As of September 30, 2020 all of the Company's certificate deposits were below the FDIC's insurance limit of $250,000 per depositor which mitigated the Company's investment risk. All other debt securities available-for-sale had a credit rating of A- or better as of September 30, 2020.

Equity securities are comprised of investments in mutual funds. The fair value of equity securities at September 30, 2020 was $0.2 million. There were no material unrealized gains or losses on equity securities recorded in income for the three and nine months ended September 30, 2020. These unrealized gains or losses are recorded as a component of other income (expense), net. There were no realized gains or losses from equity securities for the three and nine months ended September 30, 2020.