v3.26.1
Income Taxes - Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Reconciliation between effective and statutory rate, Amount    
U.S. federal statutory rate $ (14,678) $ (12,516)
State and local income taxes, net of federal income tax effect 0 5
Research and development credits (1,771) (1,870)
Change in valuation allowance 15,293 18,122
Warrant mark-to-market 736 (4,238)
Other 420 497
Total effective tax $ 0 $ 0
Tax Jurisdiction of Domicile [Extensible Enumeration] country:US country:US
Reconciliation between effective and statutory rate, Percent    
U.S. federal statutory rate (as a percent) 21.00% 21.00%
State and local income taxes, net of federal income tax effect (as a percent) 0.00%  
Research and development credits (as a percent) (2.50%) 3.10%
Changes in valuation allowance (as a percent) (21.90%) (30.40%)
Warrant mark-to-market (as a percent) (1.10%) 7.10%
Other (as a percent) (0.50%) (0.80%)
Effective tax (as a percent) 0.00% 0.00%
Operating loss carryforward with no expiration $ 507,650  
Unrecognized tax benefits 0 $ 0
Income tax related interest and penalties 0 $ 0
Federal    
Reconciliation between effective and statutory rate, Percent    
Net operating loss carry-forwards 510,296  
Tax credit carry-forwards 17,736  
State    
Reconciliation between effective and statutory rate, Percent    
Net operating loss carry-forwards 530,648  
Tax credit carry-forwards $ 1,640