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Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Numerator:        
Net income $ 1,708 $ 1,419 $ 3,789 $ 2,828
Denominator:        
Weighted average common shares outstanding (basic) 17,073 17,052 17,068 17,047
Effect of stock options 58 4 46 23
Weighted average common shares outstanding (diluted) 17,131 17,056 17,114 17,070
Earnings per common share:        
Basic $ 0.10 $ 0.08 $ 0.22 $ 0.17
Diluted $ 0.10 $ 0.08 $ 0.22 $ 0.17