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Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Earnings per share:        
Net earnings $ 3,033 $ 4,980 $ 6,166 $ 10,347
Weighted average common shares outstanding - basic (1) [1] 4,988,416 4,994,434 4,992,912 4,992,481
Assumed exercise of stock options (1) [1] 14,009 8,610 16,910 7,501
Weighted average common shares outstanding - diluted (1) [1] 5,002,425 5,003,044 5,009,822 4,999,982
Basic [2] $ 0.61 $ 1.00 $ 1.24 $ 2.07
Diluted [2] $ 0.61 $ 0.99 $ 1.23 $ 2.07
[1] Share and per share values for the periods ended June 30, 2021 have been adjusted to give effect to the 5% stock dividend paid during December 2021.
[2] Per share amounts for the periods ended June 30, 2021 have been adjusted to give effect to the 5% stock dividend paid during December 2021.