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Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]      
Net earnings available to common shareholders $ 19,493 $ 10,662 $ 10,426
Weighted average common shares outstanding - basic 4,749,830 4,822,288 4,796,615
Assumed exercise of stock options 4,361 14,533 16,704
Weighted average common shares outstanding - diluted 4,754,191 4,836,821 4,813,319
Basic [1] $ 4.10 $ 2.21 $ 2.17
Diluted [1] $ 4.10 $ 2.20 $ 2.17
[1] All per share amounts have been adjusted to give effect to the 5% stock dividends paid during December 2020, 2019 and 2018.