Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Employee and Director Benefits - Summary of Stock Option Activity (Details)

v3.20.2
Note 7 - Employee and Director Benefits - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Granted (in shares) 0      
Share-based Payment Arrangement, Option [Member]        
Outstanding, shares (in shares) 965,248 1,238,748 1,238,748  
Outstanding, weighted average exercise price (in dollars per share) $ 15.19 $ 13.02 $ 13.02  
Outstanding, weighted average remaining contractual term (Year) 4 years 6 months 5 years 4 years 10 months 24 days 5 years 2 months 12 days
Outstanding, aggregate intrinsic value $ 11,720 $ 18,603 $ 21,911 $ 23,355
Granted (in shares) 0 10,500    
Granted, weighted average exercise price (in dollars per share) $ 0 $ 34.44    
Granted, aggregate intrinsic value $ 0 $ (14)    
Exercised (in shares) (279,300) (239,300)    
Exercised, weighted average exercise price (in dollars per share) $ 11.36 $ 7.02    
Exercised, weighted average remaining contractual term (Year) 3 years 2 months 12 days 2 years 3 months 18 days    
Exercised, aggregate intrinsic value $ 6,330 $ 6,162    
Forfeited (in shares) (18,000) (20,200)    
Forfeited, weighted average exercise price (in dollars per share) $ 30.79 $ 24.88    
Forfeited, weighted average remaining contractual term (Year) 6 years 4 months 24 days      
Forfeited, aggregate intrinsic value $ 58 $ 167    
Exercisable, shares (in shares) 209,200 278,000    
Exercisable, weighted average exercise price (in dollars per share) $ 12.41 $ 7.36    
Exercisable, weighted average remaining contractual term (Year) 3 years 2 months 12 days 3 years 1 month 6 days    
Exercisable, aggregate intrinsic value $ 4,425 $ 7,261    
Granted, weighted average remaining contractual term (Year)   9 years 4 months 24 days    
Outstanding, shares (in shares) 667,948 989,748 965,248 1,238,748
Outstanding, weighted average exercise price (in dollars per share) $ 16.37 $ 14.46 $ 15.19 $ 13.02