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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Taxes [Line Items] |  |  |
Tax provision derived by applying the federal statutory rate to income before income taxes | $ (71,151) | $ (17,630) | $ (13,789)
Loss on forward contract valuation | 17,541 | 0 | 0
Acquired IPR&D | 27,340 | 0 | 0
Loss on CVR revaluation | 3,987 | 0 | 0
Other permanent differences | 4,472 | 1,042 | 1,002
Effect of tax rate on foreign jurisdiction | (53) | 42 | (5)
Change in the valuation allowance | 17,839 | 20,609 | 16,900
Income tax (benefit) expense | (26) | (136) | 141
Federal tax credits |  |  |
Income Taxes [Line Items] |  |  |
Tax credits | (1) | (3,559) | (3,815)
State tax credits |  |  |
Income Taxes [Line Items] |  |  |
Tax credits | $ 0 | $ (640) | $ (152)

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