v3.26.1
Income Taxes - Reconciliation of Provision (Benefit) (Detail) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Amount    
Income taxes (benefit) at statutory rates $ (2,844,000)  
State income tax (benefit), net of federal benefit 75,000  
Changes in valuation allowance (50,000)  
Other 104,000  
Effect of changes in tax laws or rates enacted in the current period 0  
Permanent items 865,000  
Officers' compensation 475,000  
Stock compensation 1,761,000  
Changes in unrecognized tax benefits 71,000  
Expiration of attributes 229,000  
Total (benefit) provision $ 0 $ 0
Percent    
Income taxes (benefit) at statutory rates 21.00% 21.00%
State income tax (benefit), net of federal benefit (0.60%) (3.75%)
Changes in valuation allowance 0.40% (70.27%)
Other (0.70%) (12.88%)
Effect of changes in tax laws or rates enacted in the current period 0.00% 29.65%
Permanent items (6.40%) (2.21%)
Officers' compensation (3.50%)  
Stock compensation (13.00%) (5.49%)
Changes in unrecognized tax benefits (0.50%)  
Expiration of attributes (1.70%)  
Effective income tax rate 0.00% 0.00%
Australia    
Amount    
Research and development credit $ 984,000  
Changes in valuation allowance (950,000)  
Other $ 12,000  
Percent    
Research and development credit (7.30%)  
Changes in valuation allowance 7.00%  
Other (0.10%)  
United States    
Amount    
Research and development credit $ (732,000)  
Percent    
Research and development credit 5.40%