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Available-For-Sale Debt Securities
 9 Months Ended
Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Available-For-Sale Debt Securities
Note 4. Available-For-Sale Debt Securities
The following table summarizes the Company’s available-for-sale debt securities as of September 30, 2023 (in thousands).

September 30, 2023
Amortized CostUnrealized GainsUnrealized LossesFair Value
U.S. government securities$16,647 $2 $— $16,649 
U.S. government agency securities
14,761 7 — 14,768 
Corporate debt securities
3,938 — (8)3,930 
Commercial paper
69,392 — (27)69,365 
Total
$104,738 $9 $(35)$104,712 

The following table summarizes the Company’s available-for-sale debt securities as of December 31, 2022 (in thousands).

December 31, 2022
Amortized CostUnrealized GainsUnrealized LossesFair Value
U.S. government agency securities
$39,634 $5 $(42)$39,597 
Non-U.S. government securities
3,964 — (18)3,946 
Corporate debt securities
21,850 — (126)21,724 
Commercial paper
35,745 — (47)35,698 
Total
$101,193 $5 $(233)$100,965 


There was approximately $0.1 million realized losses related to available-for-sale debt securities for the three and nine months ended September 30, 2023. As of September 30, 2023, the fair value of the Company’s available-for-sale debt securities with contractual maturity of one year or less from the condensed consolidated balance sheet date was $104.7 million.

As of September 30, 2023, the gross unrealized losses that have been in a continuous unrealized loss position for less than 12 months were less than $0.1 million, which were related to $69.4 million of available-for-sale debt securities. There were no gross unrealized losses that have been in a continuous unrealized loss position for more than 12 months.

The Company did not recognize any credit losses related to the Company’s debt securities during the three and nine months ended September 30, 2023. Unrealized losses related to available-for-sale debt securities are due to interest rate fluctuations as opposed to credit quality. The Company does not intend to sell these investments. In addition, it is more likely than not that the Company will not be required to sell them before recovery of the amortized cost basis, which may be at maturity.