Annual report pursuant to Section 13 and 15(d)

Note 13 - Stock-based Compensation - Nonvested Option Awards Activity (Details)

v3.24.1
Note 13 - Stock-based Compensation - Nonvested Option Awards Activity (Details) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Options granted, shares (in shares) 85,000 195,200
Options granted, weighted average exercise price (in dollars per share) $ 2.11 $ 28.15
Options forfeited, weighted average exercise price (in dollars per share) $ 30.11 $ 13
Options expired, shares (in shares) (59,750) (500)
Options expired, weighted average exercise price (in dollars per share) $ 23.53 $ 3.5
Share-Based Payment Arrangement, Option [Member]    
Nonvested, shares (in shares) 235,575 95,250
Nonvest, weighted average exercise price (in dollars per share) $ 31.1 $ 40.7
Nonvested, weighted average grant date fair value (in dollars per share) $ 14 $ 15.1
Options granted, shares (in shares) 85,000 195,200
Options granted, weighted average exercise price (in dollars per share) $ 2.11 $ 28.15
Granted, weighted average grant date fair value (in dollars per share) $ 0.65 $ 13.65
Vested, shares (in shares) (58,145) (51,375)
Vested, weighted average exercise price (in dollars per share) $ 33.47 $ 39
Vested, weighted average grant date fair value (in dollars per share) $ 13.82 $ 14.7
Forfeited, shares (in shares) (87,500) (3,500)
Options forfeited, weighted average exercise price (in dollars per share) $ 30.11 $ 13
Forfeited, weighted average grant date fair value (in dollars per share) $ 12.68 $ 13
Options expired, shares (in shares) (8,500)  
Options expired, weighted average exercise price (in dollars per share) $ 49.82  
Expired, weighted average grant date fair value (in dollars per share) $ 21.45  
Nonvested, shares (in shares) 166,430 235,575
Nonvest, weighted average exercise price (in dollars per share) $ 15.04 $ 31.1
Nonvested, weighted average grant date fair value (in dollars per share) $ 6.6 $ 14