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Investments and Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Components of Investments | The components of our investments as of September 30, 2023 are as follows (in thousands):
| As of September 30, 2023
| Fair Value Measurement |  | Balance Sheet Classification
| Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Market Value |  | Cash and Cash Equivalents |  | Short-term Investments and Marketable Securities |  |
Money market fund | Level 1 |  | $ | 21,034 |  |  | $ | — |  |  | $ | 21,034 |  |  | $ | 21,034 |  |  | $ | — |  |  |
U.S. Treasury bonds | Level 1 |  | 17,002 |  |  | (10) |  |  | 16,992 |  |  | — |  |  | 16,992 |  |  |
Commercial paper | Level 2 |  | 12,042 |  |  | — |  |  | 12,042 |  |  | — |  |  | 12,042 |  |  |
Agency bonds | Level 2 |  | 9,694 |  |  | (2) |  |  | 9,692 |  |  | — |  |  | 9,692 |  |  |
Total investments |  |  | $ | 59,772 |  |  | $ | (12) |  |  | $ | 59,760 |  |  | $ | 21,034 |  |  | $ | 38,726 |  |  |
At December 31, 2022, our investments consisted of the following (in thousands):
| As of December 31, 2022
| Fair Value Measurement |  | Balance Sheet Classification
| Fair Value Level |  | Cost Basis |  | Unrealized Gains (Losses) |  | Market Value |  | Cash and Cash Equivalents |  | Short-term Investments and Marketable Securities |  |
Money market fund | Level 1 |  | $ | 39,469 |  |  | $ | — |  |  | $ | 39,469 |  |  | $ | 39,469 |  |  | $ | — |  |  |
U.S. Treasury bonds | Level 1 |  | 9,396 |  |  | (13) |  |  | 9,383 |  |  | — |  |  | 9,383 |  |  |
Commercial paper | Level 2 |  | 26,704 |  |  | — |  |  | 26,704 |  |  | — |  |  | 26,704 |  |  |
Corporate bonds | Level 2 |  | 9,353 |  |  | (12) |  |  | 9,341 |  |  | — |  |  | 9,341 |  |  |
Agency bonds | Level 2 |  | 2,432 |  |  | 3 |  |  | 2,435 |  |  | — |  |  | 2,435 |  |  |
Total investments |  |  | $ | 87,354 |  |  | $ | (22) |  |  | $ | 87,332 |  |  | $ | 39,469 |  |  | $ | 47,863 |  |  |
Schedule of Amortized Cost Basis and Fair Value of Debt Securities by Contractual Maturity | The amortized cost basis and fair value of debt securities as of September 30, 2023, by contractual maturity, are as follows (in thousands):
| As of September 30, 2023
| Cost Basis |  | Fair Value
Due in one year or less | $ | 59,772 |  |  | $ | 59,760 |
Total investments | $ | 59,772 |  |  | $ | 59,760 |

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