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Earnings per Common Share (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Earnings Per Share
The following table presents the computation of basic and diluted earnings per share for the three and nine months ended September 30, 2017 and 2016 (dollars in thousands, except per share data):
 
Three Months Ended
 
Nine Months Ended
 
September 30, 2017
 
September 30, 2016
 
September 30, 2017
 
September 30, 2016
(Numerator):
 
 
 
 
 
 
 
Net income
$
1,832

 
$
1,694

 
$
5,131

 
$
4,226

(Denominator):
 
 
 
 
 
 
 
Weighted average shares outstanding – basic
4,943,301

 
4,925,753

 
4,939,905

 
4,923,598

Potentially dilutive common shares – restricted stock units
2,827

 
4,169

 
2,284

 
2,782

Weighted average shares outstanding – diluted
4,946,128

 
4,929,922

 
4,942,189

 
4,926,380

Income per common share
 
 
 
 
 
 
 
Basic
$
0.37

 
$
0.34

 
$
1.04

 
$
0.86

Diluted
$
0.37

 
$
0.34

 
$
1.04

 
$
0.86