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Agreement and Plan of Merger - Summary of Final Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Nov. 14, 2024
--- | --- | --- | ---
Liabilities assumed |  |  |
Goodwill | $ 8,430 | $ 8,430 |
Peak Bio |  |  |
Assets acquired |  |  |
Cash and restricted cash |  |  | $ 382
Prepaid expenses and other current assets |  |  | 10
Acquired in-process research and development |  |  | 39,180
Total assets acquired |  |  | 39,572
Liabilities assumed |  |  |
Accounts payable and accrued expenses |  |  | 6,979
Convertible notes |  |  | 700
Notes payable |  |  | 659
Notes payable, related party |  |  | 1,651
Deferred tax liability |  |  | 8,040
Total liabilities assumed |  |  | 18,029
Total assets acquired and liabilities assumed |  |  | 21,543
Goodwill |  |  | 8,430
Net assets acquired |  |  | $ 29,973

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