v3.26.1
Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Amount:    
U.S. federal statutory tax rate $ (5,529,000) $ (23,517,000)
State and local income tax, net of federal income tax effect 176,000 367,000
Foreign tax effects 25,000 (57,000)
Research and development tax credits (234,000) 145,000
Change in valuation allowance 5,491,000 26,974,000
Contingent consideration liability 0 (2,287,000)
Officers' compensation 22,000 188,000
Stock-based compensation 752,000 1,716,000
Convertible debentures and warrants (795,000) 1,544,000
Other nontaxable or nondeductible items 20,000 44,000
Changes in unrecognized tax benefits 0 0
Section 382 (0) (4,239,000)
Other 139,000 (845,000)
Provision for income taxes $ 67,000 $ 33,000
Percent:    
U.S. federal statutory tax rate 21.00% 21.00%
State and local income tax, net of federal income tax effect (0.67%) (0.33%)
Foreign tax effects (0.10%) 0.05%
Research and development tax credits 0.89% (0.13%)
Change in valuation allowance (20.86%) (24.09%)
Contingent consideration liability 0.00% 2.04%
Officers' compensation (0.08%) (0.17%)
Stock-based compensation (2.86%) (1.53%)
Convertible debentures and warrants 3.02% (1.38%)
Other nontaxable or nondeductible items (0.07%) (0.04%)
Changes in unrecognized tax benefits 0.00% 0.00%
Section 382 0.00% 3.79%
Other (0.52%) 0.75%
Effective income tax rate (0.25%) (0.04%)