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Income Taxes - Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income Tax Examination [Line Items] |  |  |
Income tax expense (benefit) | $ 0.3 | $ (19.0) |
Valuation allowance, deferred tax asset, increase (decrease), amount | 123.6 |  | $ (3.5)
Tax benefit related to the CVR liability | 108.8 |  |
Operating loss carryforwards, not subject to expiration | 74.4 |  |
Operating loss carryforwards, subject to expiration | 113.4 |  |
Capitalized research and experimental costs, tax purposes | 45.1 | $ 43.9 |
Federal |  |  |
Income Tax Examination [Line Items] |  |  |
Operating loss carryforwards | 152.6 |  |
Tax credit carryforward, amount | 5.2 |  |
State |  |  |
Income Tax Examination [Line Items] |  |  |
Operating loss carryforwards | 187.8 |  |
Tax credit carryforward, amount | $ 1.0 |  |

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