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Marketable Debt Securities | 3 Months Ended
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Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Marketable Debt Securities | 4. Marketable Debt Securities Marketable debt securities, all of which were classified as available-for-sale, consist of the following (in thousands):
|  | March 31, 2023 |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Aggregate Fair Value |
Marketable debt securities |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 95,594 |  |  | $ | 696 |  |  | $ | - |  |  | $ | 96,290 |
Total |  | $ | 95,594 |  |  | $ | 696 |  |  | $ | - |  |  | $ | 96,290 |
As of December 31, 2022, the Company did no t have marketable debt securities. As of March 31, 2023, the remaining contractual terms of the U.S. Treasury securities are less than 12 months. Interest and Investment Income Interest and investment income consists of the following (in thousands):
|  | Three Months Ended March 31, |
|  | 2023 |  |  | 2022 |
Interest income |  | $ | 1,066 |  |  | $ | 9 |
Accretion of discount, net |  |  | 607 |  |  |  | - |
Total interest and investment income |  | $ | 1,673 |  |  | $ | 9 |

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