Income Taxes - Schedule of Reconciliation of Statutory Federal Income Tax (Detail)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal tax at statutory rate	21.00%	21.00%
State income tax, net of federal benefit	2.70%	3.40%
Other permanent items	(2.20%)	(0.90%)
Change in tax rate	0.20%	1.30%
Investment in subsidiary	53.60%	0.00%
Officers compensation	(2.10%)	(0.70%)
Research credit	4.90%	5.40%
Change in valuation allowance	(78.10%)	(29.50%)
Effective tax rate	0.00%	0.00%