v3.26.1
Income Taxes - Schedule of Income Tax Reconciliation (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Amount:    
U.S. federal statutory tax rate $ (10,547,000) $ (12,739,000)
State and local income taxes, net of federal income tax effect [1] (182,000) (113,000)
Foreign tax effects, Statutory tax rate difference between Germany and the U.S. 4,000 (8,000)
Effect of changes in tax laws or rates enacted in the current period 0 0
Effect of cross-border tax laws 0 0
Tax Credit, Research and development tax credits (721,000) (151,000)
Changes in valuation allowances 9,179,000 (472,000)
Nontaxable or nondeductible items, Permanent adjustments 31,000 54,000
Nontaxable or nondeductible items, Stock-based payment awards 445,000 310,000
Nontaxable or nondeductible items, Change in fair value of contingent consideration 1,249,000 (898,000)
Nontaxable or nondeductible items, Section 382 limitation 0 15,225,000
Changes in unrecognized tax benefits 542,000 (1,208,000)
Effective tax rates, Amount $ 0 $ 0
Percent:    
U.S. federal statutory tax rate 21.00% 21.00%
State and local income taxes, net of federal income tax effect [1] 0.00% 0.00%
Foreign tax effects, Statutory tax rate difference between Germany and the U.S. 0.00% 0.00%
Effect of changes in tax laws or rates enacted in the current period 0.00% 0.00%
Effect of cross-border tax laws 0.00% 0.00%
Tax Credit, Research and development tax credits 1.00% 0.00%
Changes in valuation allowances (18.00%) 1.00%
Nontaxable or nondeductible items, Permanent adjustments 0.00% 0.00%
Nontaxable or nondeductible items, Stock-based payment awards (1.00%) (1.00%)
Nontaxable or nondeductible items, Change in fair value of contingent consideration (2.00%) 2.00%
Nontaxable or nondeductible items, Section 382 limitation 0.00% (25.00%)
Changes in unrecognized tax benefits (1.00%) 2.00%
Effective tax rates, Percent 0.00% (0.00%)
[1] State taxes in California, Tennessee and Florida made up 100 percent of the tax effect in this category.