Annual report pursuant to Section 13 and 15(d)

Note 12 - Share-based Compensation - Stock Options Outstanding (Details)

v3.24.1
Note 12 - Share-based Compensation - Stock Options Outstanding (Details)
 12 Months Ended
Dec. 31, 2023
$ / shares
shares
Outstanding, shares (in shares) | shares 3,871,013
Outstanding, weighted average remaining contractual life (Year) 7 years 1 month 6 days
Outstanding, weighted average exercise price (in dollars per share) $ 3.61
Exercisable, shares (in shares) | shares 2,206,329
Exercisable, weighted average remaining contractual life (Year) 6 years 1 month 6 days
Exercise Price Range 1 [Member]  
Per share exercise price, lower range (in dollars per share) $ 1
Per share exercise price, upper range (in dollars per share) $ 1.99
Outstanding, shares (in shares) | shares 343,443
Outstanding, weighted average remaining contractual life (Year) 9 years
Outstanding, weighted average exercise price (in dollars per share) $ 1.55
Exercisable, shares (in shares) | shares 78,112
Exercisable, weighted average remaining contractual life (Year) 8 years 10 months 24 days
Exercise Price Range 2 [Member]  
Per share exercise price, lower range (in dollars per share) $ 2
Per share exercise price, upper range (in dollars per share) $ 2.99
Outstanding, shares (in shares) | shares 1,706,470
Outstanding, weighted average remaining contractual life (Year) 7 years 9 months 18 days
Outstanding, weighted average exercise price (in dollars per share) $ 2.62
Exercisable, shares (in shares) | shares 612,581
Exercisable, weighted average remaining contractual life (Year) 6 years 9 months 18 days
Exercise Price Range 3 [Member]  
Per share exercise price, lower range (in dollars per share) $ 3
Per share exercise price, upper range (in dollars per share) $ 3.99
Outstanding, shares (in shares) | shares 448,726
Outstanding, weighted average remaining contractual life (Year) 6 years 9 months 18 days
Outstanding, weighted average exercise price (in dollars per share) $ 3.75
Exercisable, shares (in shares) | shares 282,324
Exercisable, weighted average remaining contractual life (Year) 5 years 8 months 12 days
Exercise Price Range 4 [Member]  
Per share exercise price, lower range (in dollars per share) $ 4
Per share exercise price, upper range (in dollars per share) $ 4.99
Outstanding, shares (in shares) | shares 862,849
Outstanding, weighted average remaining contractual life (Year) 5 years 6 months
Outstanding, weighted average exercise price (in dollars per share) $ 4.59
Exercisable, shares (in shares) | shares 857,849
Exercisable, weighted average remaining contractual life (Year) 5 years 6 months
Exercise Price Range 5 [Member]  
Per share exercise price, lower range (in dollars per share) $ 5
Per share exercise price, upper range (in dollars per share) $ 16
Outstanding, shares (in shares) | shares 509,525
Outstanding, weighted average remaining contractual life (Year) 6 years 6 months
Outstanding, weighted average exercise price (in dollars per share) $ 6.56
Exercisable, shares (in shares) | shares 375,463
Exercisable, weighted average remaining contractual life (Year) 6 years 1 month 6 days