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Short-Term Investments (Tables) | 3 Months Ended
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Mar. 31, 2024
Short-Term Investments [Abstract] |
Summary of Short-Term Investments | The following is a summary of our short-term investments (in thousands):
|  | March 31, 2024 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
U.S. Treasury bills and government agency obligations |  | $ | 40,533 |  |  | $ | — |  |  | $ | (6 | ) |  | $ | 40,527 |
U.S. corporate debt securities |  |  | 6,298 |  |  |  | — |  |  |  | (1 | ) |  |  | 6,297 |
Foreign corporate debt securities |  |  | 4,249 |  |  |  | 1 |  |  |  | — |  |  |  | 4,250 |
U.S. commercial paper |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Foreign commercial paper |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Total |  | $ | 51,080 |  |  | $ | 1 |  |  | $ | (7 | ) |  | $ | 51,074 |
|  | December 31, 2023 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
U.S. Treasury bills and government agency obligations |  | $ | 31,625 |  |  | $ | 11 |  |  | $ | — |  |  | $ | 31,636 |
U.S. corporate debt securities |  |  | 11,652 |  |  |  | 1 |  |  |  | — |  |  |  | 11,653 |
Foreign corporate debt securities |  |  | 5,459 |  |  |  | 1 |  |  |  | — |  |  |  | 5,460 |
U.S. commercial paper |  |  | 1,991 |  |  |  | — |  |  |  | (1 | ) |  |  | 1,990 |
Foreign commercial paper |  |  | 993 |  |  |  | — |  |  |  | — |  |  |  | 993 |
Total |  | $ | 51,720 |  |  | $ | 13 |  |  | $ | (1 | ) |  | $ | 51,732 |

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