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Cash and Cash Equivalents, Restricted Cash and Investments (Tables) | 9 Months Ended
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Sep. 30, 2025
Cash, Cash Equivalents, and Short-Term Investments [Abstract] |
Schedule of Cash, Cash Equivalents and Short-term Investments | The fair value of cash and cash equivalents, restricted cash and investments held are as follows:
|  | As of September 30, 2025
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
|  | (in thousands)
Cash and cash equivalents |  | $ | 49,656 |  |  | $ | — |  |  | $ | — |  |  | $ | 49,656 |
Restricted cash |  | 29,000 |  |  | — |  |  | — |  |  | 29,000 |
Total cash and cash equivalents and restricted cash |  | $ | 78,656 |  |  | $ | — |  |  | $ | — |  |  | $ | 78,656 |
Securities maturing within one year: |  |  |  |  |  |  |  |
U.S. treasury securities |  | 43,223 |  |  | 24 |  |  | — |  |  | 43,247 |
Corporate debt securities |  | 23,042 |  |  | 9 |  |  | (4) |  |  | 23,047 |
Total short-term investments |  | $ | 66,265 |  |  | $ | 33 |  |  | $ | (4) |  |  | $ | 66,294 |
Total cash and cash equivalents, restricted cash and short-term investments |  | $ | 144,921 |  |  | $ | 33 |  |  | $ | (4) |  |  | $ | 144,950 |
|  | As of December 31, 2024
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
|  |  |  | (in thousands) |  |
Cash and cash equivalents |  | $ | 66,656 |  |  | $ | — |  |  | $ | — |  |  | $ | 66,656 |
Restricted cash |  | — |  |  | — |  |  | — |  |  | — |
Total cash and cash equivalents and restricted cash |  | $ | 66,656 |  |  | $ | — |  |  | $ | — |  |  | $ | 66,656 |
Securities maturing within one year: |  |  |  |  |  |  |  |
U.S. treasury securities |  | 127,884 |  |  | 106 |  |  | — |  |  | 127,990 |
Corporate debt securities |  | 43,299 |  |  | 30 |  |  | (18) |  |  | 43,311 |
Total short-term investments |  | $ | 171,183 |  |  | $ | 136 |  |  | $ | (18) |  |  | $ | 171,301 |
Total cash and cash equivalents, restricted cash and short-term investments |  | $ | 237,839 |  |  | $ | 136 |  |  | $ | (18) |  |  | $ | 237,957 |

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