v3.26.1
Note 11 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net income (loss) before taxes $ (604,257) $ 722,543  
U.S. federal statutory tax rate 21.00% 21.00% 21.00%
U.S. federal statutory tax rate, amount $ (126,894)    
State and local income taxes, net of federal income tax effect* (0.08%) [1] (0.09%) 7.73%
State and local income taxes, net of federal income tax effect, amount [1] $ 484    
Stock compensation 8.18% 9.68% 1.00%
Foreign rate differential, amount $ (7,907)    
Foreign rate differential 1.31% 1.55% (0.42%)
Prior period adjustments, amount $ 26,726    
Prior period adjustments (4.42%)    
Attributes expirations (50.35%) (59.61%) 36.01%
Other, amount $ 17,886    
Other, percent (2.96%) (0.96%) 2.97%
Return to Provision   (15.51%) 0.07%
Global intangible low-taxed income, amount $ 319,475    
Global intangible low-taxed income (52.87%) (62.60%) 44.93%
Changes in valuation allowances, amount $ (566,589)    
Changes in valuation allowances 93.77% 111.01% (111.90%)
NOL Adjustment   0.00% (10.90%)
Section 162(m) disallowance, amount $ 43,302    
Section 162(m) disallowance (7.17%) (8.48%) 0.00%
Unrecognized tax benefit   50.13% 3.82%
Stock compensation, amount $ (49,400)    
Changes in unrecognized tax benefits, amount $ (255,839)    
Changes in unrecognized tax benefits 42.34%    
Attributes expirations, amount $ 304,229    
Effective income tax rate 39.06% 46.12% (5.69%)
Income tax (benefit) provision $ (236,014) $ (41,049)  
Foreign Tax Jurisdiction [Member]      
Prior period adjustments, amount $ 52,445    
Prior period adjustments (8.68%)    
Other, amount $ 6,070    
Other, percent (1.00%)    
[1] State taxes in Massachusetts made up the majority (greater than 50 percent) of the tax effect in this category.