Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Employee and Director Benefits - Summary of Restricted Stock and Performance Shares Activity (Details)

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Note 7 - Employee and Director Benefits - Summary of Restricted Stock and Performance Shares Activity (Details) - $ / shares
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Restricted Stock [Member]    
Non-vested, shares (in shares) 141,580 127,602
Non-vested, weighted average grant date fair value (in dollars per share) $ 56.39 $ 42.27
Granted, shares (in shares) 49,415 52,819
Granted, weighted average grant date fair value (in dollars per share) $ 60.29 $ 83.33
Vested, shares (in shares) (31,492) (26,563)
Vested, weighted average grant date fair value (in dollars per share) $ 52.22 $ 43.51
Forfeited, shares (in shares) (11,733) (8,206)
Forfeited, weighted average grant date fair value (in dollars per share) $ 64.78 $ 61.7
Non-vested, shares (in shares) 147,770 145,652
Non-vested, weighted average grant date fair value (in dollars per share) $ 57.92 $ 55.84
Performance Shares [Member]    
Non-vested, shares (in shares) 23,852 12,437
Non-vested, weighted average grant date fair value (in dollars per share) $ 54.16 $ 37.05
Granted, shares (in shares) 8,091 11,415
Granted, weighted average grant date fair value (in dollars per share) $ 70.29 $ 72.81
Vested, shares (in shares) 0 0
Vested, weighted average grant date fair value (in dollars per share) $ 0 $ 0
Forfeited, shares (in shares) 0 0
Forfeited, weighted average grant date fair value (in dollars per share) $ 0 $ 0
Non-vested, shares (in shares) 31,943 23,852
Non-vested, weighted average grant date fair value (in dollars per share) $ 58.25 $ 54.16