v3.25.1
Note 10 - Stock-based Compensation Stock - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Balance, number of shares (in shares) 636,802  
Balance, weighted average exercise price (in dollars per share) $ 19.38  
Balance, weighted average remaining contractual term (Year) 8 years 1 month 6 days 7 years 7 months 6 days
Balance, aggregate intrinsic value $ 0 $ 0
Granted, number of shares (in shares) 272,800  
Granted, weighted average exercise price (in dollars per share) $ 2.3  
Expired, number of shares (in shares) (154)  
Expired, weighted average exercise price (in dollars per share) $ 4,612.5  
Outstanding, shares (in shares) 909,448 636,802
Outstanding, weighted average exercise price per share (in dollars per share) $ 13.16 $ 19.38
Exercisable, shares (in shares) 383,895  
Exercisable, weighted average exercise price per share (in dollars per share) $ 22.84  
Exercisable, weighted average remaining contractual term (Year) 6 years 7 months 6 days  
Exercisable, aggregate intrinsic value $ 0