Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.1
Note 7 - Employee and Director Benefits - Summary of Stock Option Activity (Details) - Share-Based Payment Arrangement, Option [Member] - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Outstanding, shares (in shares) 280,000 353,250 353,250  
Outstanding, weighted average exercise price (in dollars per share) $ 19.43 $ 19.28 $ 19.28  
Outstanding, weighted average remaining contractual term (Year) 3 years 4 months 24 days   3 years 3 years 9 months 18 days
Outstanding, aggregate intrinsic value $ 7,428   $ 14,088 $ 23,525
Exercised, shares (in shares) (75,000) (36,500)    
Exercised, weighted average exercise price (in dollars per share) $ 10.80 $ 18.65    
Exercised, weighted average remaining contractual term (Year) 10 months 24 days 3 years 1 month 6 days    
Exercised, aggregate intrinsic value $ 3,288 $ 2,677    
Outstanding, shares (in shares) 205,000 316,750 280,000 353,250
Outstanding, weighted average exercise price (in dollars per share) $ 22.59 $ 19.35 $ 19.43 $ 19.28
Exercisable, shares (in shares) 152,000 255,000    
Outstanding, weighted average exercise price (in dollars per share) $ 17.28 $ 14.79    
Exercisable, weighted average remaining contractual term (Year) 2 years 2 months 12 days 2 years 9 months 18 days    
Exercisable, aggregate intrinsic value $ 5,859 $ 20,056    
Forfeited, weighted average remaining contractual term (Year)   3 years 8 months 12 days    
Forfeited, aggregate intrinsic value   $ 24,446