v3.26.3
Note 6 - Stockholders' Equity - Schedule of Stock Options by Exercise Price (Details)
 3 Months Ended
Mar. 31, 2026
$ / shares
shares
Options outstanding (in shares) | shares 1,376,804
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 0.85
Outstanding, weighted average remaining life (Year) 9 years 7 months 13 days
Exercisable (in shares) | shares 156,667
Exercisable, weighted average exercise price (in dollars per share) | $ / shares $ 2.02
Range 1 [Member]  
Options outstanding (in shares) | shares 235,000
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 2.02
Outstanding, weighted average remaining life (Year) 7 years 11 months 12 days
Exercisable (in shares) | shares 156,667
Exercisable, weighted average exercise price (in dollars per share) | $ / shares $ 2.02
Range 2 [Member]  
Options outstanding (in shares) | shares 1,141,804
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 0.61
Outstanding, weighted average remaining life (Year) 9 years 11 months 15 days
Exercisable (in shares) | shares 0
Exercisable, weighted average exercise price (in dollars per share) | $ / shares $ 0