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Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Amount      
Income taxes from continuing operations at statutory rate $ (4,439) $ 14,108  
State income taxes (85) 406  
State effect of permanent items (46) 33  
Permanent stock-based compensation 91 (26)  
Deferred rate change 104 1,839  
Warrants issuance (2,942) 697  
Expiring NOLs and credits (5,177) 26,355  
Milestone deferral true-up 4,285 0  
Convertible debt amortization 538 388  
Deferred stock-based compensation true-up 884 0  
Other 227 2  
R&D credit (1,235) (750)  
Increase in valuation allowance 7,946 (42,914)  
Total income tax expense $ 151 $ 138  
Percent of Pretax Income      
Income taxes from continuing operations at statutory rate (21.00%) (21.00%) (21.00%)
State income taxes 0.40% 0.60%  
State effect of permanent items 0.20% 0.00%  
Permanent stock-based compensation (0.40%) 0.00%  
Deferred rate change (0.50%) 2.70%  
Warrants issuance 13.90% 1.00%  
Expiring NOLs and credits 24.50% 39.20%  
Milestone deferral true-up (20.30%) 0.00%  
Convertible debt amortization (2.60%) 0.60%  
Deferred stock-based compensation true-up (4.20%) 0.00%  
Other (1.10%) 0.00%  
R&D credit (5.80%) 1.10%  
Increase in valuation allowance (37.60%) (63.90%)  
Total income tax expense (0.70%) (0.10%)