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Income Taxes - Reconciliation Of Effective Rate (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amount      
U.S. Federal statutory tax rate $ (6,777,357) $ (15,443,013) $ (10,531,306)
State and local income taxes, net of federal income tax effect 0 0 0
Effect of changes in tax laws or rates enacted in the current period 0 0 0
Effect of cross-border tax laws 0 0 265,769
Tax credits (209,472)   (36,666)
Incentive stock options 280,906 700,490 595,925
Stock-based compensation (windfalls) shortfalls (190,318) 103,096 109,839
Other 8,694 7,106 349,123
Changes in unrecognized tax benefits 0 0 0
Executive compensation limitation (166,112) 1,048,277 1,730,628
Expirations, forfeitures and cancellations 693,946 113,056 21,098
Net Effective Tax Rate $ 0 $ 0 $ 0
Tax Jurisdiction of Domicile [Extensible Enumeration] U.S. U.S. U.S.
Effective income tax rate reconciliation, Percent      
U.S. Federal statutory tax rate 21.00% 21.00% 21.00%
State and local income taxes, net of federal income tax effect 0.00% 0.00% 0.00%
Effect of changes in tax laws or rates enacted in the current period 0.00% 0.00% 0.00%
Effect of cross-border tax laws 0.00% 0.00% (0.50%)
Tax credits 0.60% 0.00% 0.10%
Incentive stock options (0.90%) (1.00%) (1.20%)
Stock-based compensation (windfalls) shortfalls 0.60% (0.10%) (0.20%)
Other 0.00% 0.00% (0.70%)
Changes in unrecognized tax benefits 0.00% 0.00% 0.00%
Executive compensation limitation 0.50% (1.40%) (3.50%)
Expirations, forfeitures and cancellations (2.20%) (0.20%) 0.00%
Net Effective Tax Rate 0.00% 0.00% 0.00%
U.S.      
Amount      
Change in valuation allowance $ 6,002,161 $ 13,257,284 $ 7,207,958
Other $ 195,522 $ 72,180 $ 53,793
Effective income tax rate reconciliation, Percent      
Changes in valuation allowance (18.60%) (18.00%) (14.40%)
Other (0.50%) (0.10%) (0.10%)
Germany      
Amount      
Foreign tax effects $ 17,506 $ (17,414) $ 241,597
Effective income tax rate reconciliation, Percent      
Foreign tax effects (0.10%) 0.00% (0.50%)
Japan      
Amount      
NOL expiration     $ 1,053,211
Change in valuation allowance $ 234,992 $ 175,589 (676,708)
Other $ (90,469) $ (16,651) $ (384,262)
Effective income tax rate reconciliation, Percent      
NOL expiration 0.00%   (2.10%)
Changes in valuation allowance (0.70%) (0.20%) 1.30%
Other 0.30% 0.00% 0.80%