Income Taxes - Reconciliation of Income Taxes Computed Using U.S Federal Statutory Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal statutory tax	$ (51,275)
Valuation allowance	44,102
Stock-based compensation	5,431
Contingent consideration	3,097
Success payment liabilities	2,864
Other non-deductible items	908
Research and development credits	(5,222)
Other	95
Effective income tax rate	$ 0
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Federal statutory tax	21.00%	21.00%	21.00%
State income tax, net of federal benefit		(6.31%)	15.38%
Valuation allowance	(18.06%)	(18.00%)	(45.30%)
Stock-based compensation	(2.22%)
Success payment liabilities	(1.17%)	0.55%	0.58%
Contingent consideration	(1.27%)	0.05%	3.02%
Other non-deductible items	(0.37%)
Research and development credits	2.14%
Tax credits		3.83%	6.59%
Other	(0.04%)	(1.12%)	(1.27%)
Effective income tax rate	0.00%	0.00%	0.00%