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Income Taxes - Reconciliation of U.S. Federal Statutory Income Tax Rate to Company's Effective Income Tax Rate (Detail)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]    
Federal statutory income tax rate 21.00% (21.00%)
Federal and state research and development tax credit (4.90%) (4.30%)
State taxes, net of federal benefit (0.40%) (2.30%)
Nondeductible stock compensation 8.50% 0.00%
Other nondeductible items 0.30% 1.00%
Other (1.00%) 0.00%
Reduction in tax attributes 13.90% 0.00%
Increase in deferred tax asset valuation allowance (27.20%) 26.60%
Effective income tax rate 10.20% 0.00%