Income Taxes - Reconciliation of U.S. Federal Statutory Income Tax Rate to Company's Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]
Federal statutory income tax rate	(21.00%)	21.00%
Federal tax credits	(4.30%)	(4.90%)
State taxes, net of federal benefit	1.60%	(0.40%)
Nondeductible stock compensation	0.80%	8.50%
Other nondeductible items	0.00%	0.30%
Other	(1.00%)	(1.00%)
Reduction in tax attributes	0.00%	13.90%
Increase in deferred tax asset valuation allowance	21.00%	(27.20%)
Deferred true-up	2.90%	0.00%
Effective income tax rate	0.00%	10.20%