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Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Earnings per share:    
Net earnings $ 3,133 $ 5,367
Weighted average common shares outstanding - basic [1] 4,997,459 4,990,507
Assumed exercise of stock options [1] 19,596 6,966
Weighted average common shares outstanding - diluted [1] 5,017,055 4,997,473
Basic [1],[2] $ 0.63 $ 1.08
Diluted [1],[2] $ 0.62 $ 1.08
[1] Share and per share values for the periods ended March 31, 2021 have been adjusted to give effect to the
[2] Per share amounts for the periods ended March 31, 2021 have been adjusted to give effect to the 5% stock dividend paid during December 2021.