v3.26.1
Note 5 - Stockholders' Equity, Options, and Warrants - Option Activity (Details)
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
$ / shares
shares
Outstanding (in shares) | shares 25,562,500  
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 0.05  
Outstanding, weighted average remaining contractual life (Year) 4 years 8 months 12 days 5 years 1 month 6 days
Shares issued for exercise of employee stock options (in shares) | shares 70,000  
Exercised, weighted average exercise price (in dollars per share) | $ / shares $ 0.04  
Forfeited (in shares) | shares 1,055,000  
Forfeited, weighted average exercise price (in dollars per share) | $ / shares $ 0.08  
Outstanding (in shares) | shares 25,437,500 25,562,500
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 0.05 $ 0.05
Exercisable (in shares) | shares 21,477,500  
Exercisable, weighted average exercise price (in dollars per share) | $ / shares $ 0.05  
Exercisable, weighted average remaining contractual life (Year) 4 years 1 month 6 days  
Weighted Average [Member]    
Outstanding, aggregate intrinsic value | $ $ 667,175  
Exercisable, aggregate intrinsic value | $ $ 547,475