v3.26.1
Note 9 - Equity - Option Activity (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Outstanding (in shares) 56 2,505  
Outstanding, weighted average exercise price (in dollars per share) $ 5,342 $ 2,000  
Outstanding, weighted average grant date fair value (in dollars per share) $ 2,874 $ 1,080  
Outstanding, remaining contractual term (Year)   1 year 2 months 23 days 1 year 5 months 26 days
Outstanding, aggregate intrinsic value $ 0 $ 2,294  
Granted (in shares) 0 0  
Granted, weighted average exercise price (in dollars per share) $ 0 $ 0  
Exercised (in shares) 0 0  
Exercised, weighted average exercise price (in dollars per share) $ 0 $ 0  
Expired/forfeited (in shares) (56) (2,449)  
Expired/Forfeited, weighted average exercise price (in dollars per share) $ 2,874 $ 1,953  
Expired/forfeited, weighted average grant date fair value (in dollars per share) $ 160,941 $ 1,060  
Outstanding (in shares) 0 56 2,505
Outstanding, weighted average exercise price (in dollars per share) $ 0 $ 5,342 $ 2,000
Outstanding, weighted average grant date fair value (in dollars per share) $ 0 $ 2,874 $ 1,080
Outstanding, aggregate intrinsic value $ 0 $ 0 $ 2,294
Exercisable (in shares) 0 56  
Exercisable, weighted average exercise price (in dollars per share) $ 0 $ 5,342  
Exercisable, weighted average fair value $ 0 $ 0  
Exercisable, remaining contractual term (Year)   1 year 2 months 23 days