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Income Taxes - Components of the Company's deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Net operating loss carryforwards	$ 29,605	$ 9,960
Capitalized research and development	39,716	19,573
Research and development tax credits	14,292	6,547
Accruals	1,886	1,424
Milestone payments	442	719
Stock-based compensation	4,016	1,188
Other	901	550
Total deferred tax assets	90,858	39,961
Deferred tax liabilities:
Amortization and other	(563)	(200)
Total deferred tax liabilities	563	200
Net deferred tax asset before valuation allowance	90,295	39,761
Valuation allowance	$ (90,295)	$ (39,761)

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