v3.26.1
Note 13 - Stock-based Compensation - Schedule of Stock Option Activity (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Share-Based Payment Arrangement, Option [Member]    
Options, Outstanding (in shares) 3,701  
Options, outstanding, weighted average exercise price (in dollars per share) $ 88.72  
Options, outstanding, weighted average remaining life (Year) 9 years 3 months 14 days 8 years 4 months 17 days
Options, outstanding, aggregate intrinsic value $ 0 $ 0
Options exercised (in shares) 0  
Options exercised, weighted average exercise price (in dollars per share) $ 0  
Options granted (in shares) 160,360  
Options granted, weighted average exercise price (in dollars per share) $ 6.34  
Cancelled/forfeited (in shares) (40,383)  
Cancelled/forfeited, weighted average exercise price (in dollars per share) $ 8.59  
Options, outstanding (in shares) 123,678 3,701
Options, outstanding, weighted average exercise price (in dollars per share) $ 8.07 $ 88.72
Options, outstanding, vested and expected to vest (in shares) 123,678  
Options, outstanding, vested and expected to vest, weighted average exercise price (in dollars per share) $ 8.07  
Options, outstanding, vested and expected to vest, weighted average remaining life (Year) 9 years 3 months 14 days  
Options, outstanding, vested and expected to vest, aggregate intrinsic value $ 0  
Options, exercisable, vested and expected to vest (in shares) 13,017  
Options, exercisable, vested and expected to vest, weighted average exercise price (in dollars per share) $ 17.98  
Options, exercisable, vested and expected to vest, weighted average remaining life (Year) 8 years 9 months  
Options, exercisable, vested and expected to vest, aggregate intrinsic value $ 0  
Non-plan Options [Member]    
Options, Outstanding (in shares) 1,315  
Options, outstanding, weighted average exercise price (in dollars per share) $ 101.1  
Options, outstanding, weighted average remaining life (Year) 9 years 7 days 9 years 3 months 29 days
Options, outstanding, aggregate intrinsic value $ 0 $ 0
Options exercised (in shares) 0  
Options exercised, weighted average exercise price (in dollars per share) $ 0  
Options granted (in shares) 26,315  
Options granted, weighted average exercise price (in dollars per share) $ 10.07  
Cancelled/forfeited (in shares) (1,315)  
Cancelled/forfeited, weighted average exercise price (in dollars per share) $ 101.1  
Options, outstanding (in shares) 26,315 1,315
Options, outstanding, weighted average exercise price (in dollars per share) $ 10.07 $ 101.1
Options, outstanding, vested and expected to vest (in shares) 26,315  
Options, outstanding, vested and expected to vest, weighted average exercise price (in dollars per share) $ 10.07  
Options, outstanding, vested and expected to vest, aggregate intrinsic value $ 0  
Options, exercisable, vested and expected to vest (in shares) 8,040  
Options, exercisable, vested and expected to vest, weighted average exercise price (in dollars per share) $ 10.07  
Options, exercisable, vested and expected to vest, weighted average remaining life (Year) 9 years 7 days  
Options, exercisable, vested and expected to vest, aggregate intrinsic value $ 0  
Options, Exercisable, weighted average remaining life (Year) 9 years 7 days