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Equity-based Compensation - Compensation expense (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Equity-based Compensation |  |
Total equity-based compensation | $ 586 | $ 1,171
Total unrecognized compensation cost related to options | $ 3,246 |
Weighted average period over which the unrecognized compensation cost is expected to be recognized | 2 years 7 months 2 days |
Performance-based awards |  |
Equity-based Compensation |  |
Total unrecognized compensation cost related to options | $ 310 |
Weighted average period over which the unrecognized compensation cost is expected to be recognized | 6 months 25 days |
Research and development |  |
Equity-based Compensation |  |
Total equity-based compensation | $ 310 | 231
General and administrative |  |
Equity-based Compensation |  |
Total equity-based compensation | $ 276 | $ 940

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