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Segment Reporting - Schedule of Significant Segment Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Segment Reporting [Abstract] |  |
Personnel related costs | $ 13,544 | $ 23,936
Research and development expenses | 6,795 | 14,346
Clinical trial expenses | 4,325 | 11,285
General and administrative expenses | 7,062 | 8,952
Facilities expenses | 6,529 | 7,734
Stock-based compensation expense | 2,782 | 7,407
Depreciation and other segment expenses (Note A) | 1,291 | 2,266
Total segment expenses | 42,328 | 75,926
Restructuring charges | 1,480 | 3,343
Impairment charges | 0 | 1,469
Total segment and operating expenses | $ 43,808 | $ 80,738

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