Income Taxes - Schedule of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Net operating loss carryforwards	$ 89,858	$ 67,818
Start-up costs	9,699	9,699
Accruals and reserves	1,085	672
Intellectual property	3,582	4,074
Stock-based compensation	3,005	3,063
Capitalization of research and development expense	13,658	20,800
Deferred revenue	1,236	1,784
Tax credits	13,853	11,641
Lease liabilities	842	966
Total deferred tax assets	136,818	120,517
Valuation allowance	(136,045)	(119,616)
Deferred tax assets, net of valuation allowance	773	901
Deferred tax liabilities:
Lease right-of-use assets	(773)	(901)
Net deferred tax assets	$ 0	$ 0