Income Taxes - Schedule of Reconciliation of Income Tax Expense Computed at Statutory Corporate Income Tax Rate to Effective Income Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of Effective Income Tax Rate
Income tax expense at statutory rate	11.90%	11.90%	11.90%
State income tax, net of federal benefit	1.10%	2.30%	1.20%
Nondeductible expenses	0.00%	(0.20%)	(0.20%)
Foreign rate differential	(1.00%)	(2.10%)	(0.10%)
Statutory to U.S. GAAP permanent differences	0.00%	0.00%	0.00%
Stock-based compensation	(0.40%)	(4.00%)	(0.20%)
Impact of deferred rate change	(0.10%)	0.10%	(0.10%)
Research credits	2.70%	8.20%	3.30%
Change in valuation allowance	(15.20%)	(17.20%)	(15.80%)
Other Rate Items	0.00%	(0.90%)	0.00%
Effective income tax rate	(1.00%)	(1.90%)	0.00%