Annual report pursuant to Section 13 and 15(d)

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

v3.22.0.1
Note 12 - Share-based Compensation - Stock Options Outstanding (Details)
 12 Months Ended
Dec. 31, 2021
$ / shares
shares
Outstanding, shares (in shares) | shares 1,896,600
Outstanding, weighted average remaining contractual life (Year) 7 years 4 months 24 days
Outstanding, weighted average exercise price (in dollars per share) $ 5.25
Exercisable, shares (in shares) | shares 1,284,876
Exercisable, weighted average remaining contractual life (Year) 6 years 7 months 6 days
Exercise Price Range 1 [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 120,500
Outstanding, weighted average remaining contractual life (Year) 4 years
Outstanding, weighted average exercise price (in dollars per share) $ 2.39
Exercisable, shares (in shares) | shares 120,500
Exercisable, weighted average remaining contractual life (Year) 4 years
Exercise Price Range 2 [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 170,508
Outstanding, weighted average remaining contractual life (Year) 8 years 2 months 12 days
Outstanding, weighted average exercise price (in dollars per share) $ 3.75
Exercisable, shares (in shares) | shares 49,325
Exercisable, weighted average remaining contractual life (Year) 6 years 4 months 24 days
Exercise Price Range 3 [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 953,567
Outstanding, weighted average remaining contractual life (Year) 7 years 6 months
Outstanding, weighted average exercise price (in dollars per share) $ 4.50
Exercisable, shares (in shares) | shares 823,025
Exercisable, weighted average remaining contractual life (Year) 7 years 3 months 18 days
Exercise Price Range 4 [Member]  
Per share exercise price, lower range (in dollars per share) $ 5.00
Per share exercise price, upper range (in dollars per share) $ 10.00
Outstanding, shares (in shares) | shares 594,525
Outstanding, weighted average remaining contractual life (Year) 8 years 2 months 12 days
Outstanding, weighted average exercise price (in dollars per share) $ 6.38
Exercisable, shares (in shares) | shares 249,526
Exercisable, weighted average remaining contractual life (Year) 6 years 4 months 24 days
Exercise Price Range 5 [Member]  
Per share exercise price, upper range (in dollars per share) $ 34.00
Outstanding, shares (in shares) | shares 57,500
Outstanding, weighted average remaining contractual life (Year) 4 years
Outstanding, weighted average exercise price (in dollars per share) $ 16.18
Exercisable, shares (in shares) | shares 42,500
Exercisable, weighted average remaining contractual life (Year) 2 years 2 months 12 days