Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.2
Note 12 - Share-based Compensation - Stock Options Outstanding (Details)
 6 Months Ended
Jun. 30, 2023
$ / shares
shares
Outstanding, shares (in shares) | shares 3,643,513
Outstanding, weighted average remaining contractual life (Year) 7 years 7 months 6 days
Outstanding, weighted average exercise price (in dollars per share) $ 3.69
Exercisable, shares (in shares) | shares 1,884,399
Exercisable, weighted average remaining contractual life (Year) 6 years
Exercise Price Range 1 [Member]  
Per share exercise price, lower range (in dollars per share) $ 1.00
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 6 months
Outstanding, weighted average exercise price (in dollars per share) $ 1.55
Exercisable, shares (in shares) | shares 2,204
Exercisable, weighted average remaining contractual life (Year) 9 years 8 months 12 days
Exercise Price Range 2 [Member]  
Per share exercise price, lower range (in dollars per share) $ 2.00
Per share exercise price, upper range (in dollars per share) $ 2.99
Outstanding, shares (in shares) | shares 1,506,470
Outstanding, weighted average remaining contractual life (Year) 8 years 7 months 6 days
Outstanding, weighted average exercise price (in dollars per share) $ 2.62
Exercisable, shares (in shares) | shares 413,816
Exercisable, weighted average remaining contractual life (Year) 6 years 3 months 18 days
Exercise Price Range 3 [Member]  
Per share exercise price, lower range (in dollars per share) $ 3.00
Per share exercise price, upper range (in dollars per share) $ 3.99
Outstanding, shares (in shares) | shares 408,726
Outstanding, weighted average remaining contractual life (Year) 6 years 6 months
Outstanding, weighted average exercise price (in dollars per share) $ 3.83
Exercisable, shares (in shares) | shares 275,275
Exercisable, weighted average remaining contractual life (Year) 5 years 7 months 6 days
Exercise Price Range 4 [Member]  
Per share exercise price, lower range (in dollars per share) $ 4.00
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) 6 years
Outstanding, weighted average exercise price (in dollars per share) $ 4.59
Exercisable, shares (in shares) | shares 852,016
Exercisable, weighted average remaining contractual life (Year) 6 years
Exercise Price Range 5 [Member]  
Per share exercise price, lower range (in dollars per share) $ 5.00
Per share exercise price, upper range (in dollars per share) $ 16.00
Outstanding, weighted average remaining contractual life (Year) 6 years 9 months 18 days
Outstanding, weighted average exercise price (in dollars per share) $ 6.58
Exercisable, shares (in shares) | shares 341,088
Exercisable, weighted average remaining contractual life (Year) 6 years 2 months 12 days