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Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2020
Earnings Per Share [Abstract]  
Computations of Earnings per Common Share
Earnings per share for the three and nine months ended September 30, 2020 and 2019 were calculated as follows (dollars in thousands, except share and per share data):
Three Months Ended
September 30,
Nine Months Ended 
September 30,
 2020201920202019
Net income$4,250 4,727 14,333 14,082 
Less allocation of earnings and dividends to participating securities10 33 24 
Net income allocated to common shareholders$4,240 4,720 14,300 14,058 
Weighted average common shares outstanding, gross12,967,460 12,951,701 12,964,582 13,157,538 
Less average participating securities29,595 18,751 29,595 22,404 
Weighted average number of shares outstanding used in the calculation of basic earnings per common share12,937,865 12,932,950 12,934,987 13,135,134 
Add dilutive effect of:    
Stock options36 4,195 401 3,966 
Adjusted weighted average number of shares outstanding used in the calculation of diluted earnings per common share12,937,901 12,937,145 12,935,388 13,139,100 
Earnings per common share:    
Basic$0.33 0.36 1.11 1.07 
Diluted0.33 0.36 1.11 1.07