v3.26.1
Note 10 - Stock-based Compensation Stock - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Balance, number of shares (in shares) 992,701  
Balance, weighted average exercise price (in dollars per share) $ 11.76  
Balance, weighted average remaining contractual term (Year) 7 years 8 months 12 days 8 years
Granted, number of shares (in shares) 299,300  
Granted, weighted average exercise price (in dollars per share) $ 4.8  
Exercised, number of shares (in shares) (6,000)  
Exercised, weighted average exercise price (in dollars per share) $ 2.3  
Forfeited, number of shares (in shares) (195)  
Forfeited, weighted average exercise price (in dollars per share) $ 5.33  
Outstanding, shares (in shares) 1,285,806 992,701
Outstanding, weighted average exercise price per share (in dollars per share) $ 10.19 $ 11.76
Outstanding, aggregate intrinsic value $ 0  
Exercisable, shares (in shares) 647,997  
Exercisable, weighted average exercise price per share (in dollars per share) $ 14.66  
Exercisable, weighted average remaining contractual term (Year) 6 years 3 months 18 days  
Exercisable, aggregate intrinsic value $ 0