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Note 2 - Earnings Per Share - Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Net income available to common stockholders $ 2,369 $ 3,221 $ 7,314 $ 7,056
Basic and diluted weighted average common shares outstanding (in shares) 12,578,494 13,060,266 12,655,305 13,142,584
Basic and diluted earnings per common share (in dollars per share) $ 0.19 $ 0.25 $ 0.58 $ 0.54