Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes [Line Items]
Tax provision derived by applying the federal statutory rate to income before income taxes	$ (43,673)	$ (71,151)	$ (17,630)
Loss on forward contract valuation	0	17,541	0
Acquired IPR&D	0	27,340	0
Loss on CVR revaluation	4,290	3,987	0
Other permanent differences	1,865	4,472	1,042
Effect of tax rate on foreign jurisdiction	(2)	(53)	42
Other, net	191	0	0
Change in the valuation allowance	37,471	17,839	20,609
Income tax (benefit) expense	51	(26)	(136)
Federal tax credits
Income Taxes [Line Items]
Tax credits	(91)	(1)	(3,559)
State tax credits
Income Taxes [Line Items]
Tax credits	$ 0	$ 0	$ (640)