v3.25.2
Note 13 - Stock-based Compensation - Schedule of Stock Option Activity (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Share-Based Payment Arrangement, Option [Member]    
Options, Outstanding (in shares) 70,605  
Options, outstanding, weighted average exercise price (in dollars per share) $ 20.88  
Options, outstanding, weighted average remaining life (Year) 9 years 6 months 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) 2,127,500  
Options granted, weighted average exercise price (in dollars per share) $ 0.4  
Cancelled/forfeited (in shares) (287,670)  
Cancelled/forfeited, weighted average exercise price (in dollars per share) $ 0.49  
Options, outstanding (in shares) 1,910,435 70,605
Options, outstanding, weighted average exercise price (in dollars per share) $ 1.14 $ 20.88
Options, outstanding, vested and expected to vest (in shares) 1,910,435  
Options, outstanding, vested and expected to vest, weighted average exercise price (in dollars per share) $ 1.14  
Options, outstanding, vested and expected to vest, weighted average remaining life (Year) 9 years 6 months  
Options, outstanding, vested and expected to vest, aggregate intrinsic value $ 0  
Options, exercisable, vested and expected to vest (in shares) 281,204  
Options, exercisable, vested and expected to vest, weighted average exercise price (in dollars per share) $ 4.94  
Options, exercisable, vested and expected to vest, weighted average remaining life (Year) 8 years 5 months 15 days  
Options, exercisable, vested and expected to vest, aggregate intrinsic value $ 0  
Non-plan Options [Member]    
Options, Outstanding (in shares) 25,000  
Options, outstanding, weighted average exercise price (in dollars per share) $ 5.32  
Options, outstanding, weighted average remaining life (Year) 9 years 5 months 4 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) 500,000  
Options granted, weighted average exercise price (in dollars per share) $ 0.53  
Cancelled/forfeited (in shares) (20,000)  
Cancelled/forfeited, weighted average exercise price (in dollars per share) $ 5.32  
Options, outstanding (in shares) 505,000 25,000
Options, outstanding, weighted average exercise price (in dollars per share) $ 0.58 $ 5.32
Options, outstanding, vested and expected to vest (in shares) 505,000  
Options, outstanding, vested and expected to vest, weighted average exercise price (in dollars per share) $ 0.58  
Options, outstanding, vested and expected to vest, aggregate intrinsic value $ 0  
Options, exercisable, vested and expected to vest (in shares) 74,445  
Options, exercisable, vested and expected to vest, weighted average exercise price (in dollars per share) $ 0.85  
Options, exercisable, vested and expected to vest, weighted average remaining life (Year) 9 years 5 months 4 days  
Options, exercisable, vested and expected to vest, aggregate intrinsic value $ 0  
Options, Exercisable, weighted average remaining life (Year) 8 years 10 months 20 days