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Earnings Per Common Share (Tables)
12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Schedule of weighted average number of shares used in computing earnings per share
The following shows the weighted average number of shares used in computing earnings per common share and the effect on weighted average number of shares of potentially dilutive common stock.  Potentially dilutive common stock had no effect on income available to common shareholders. Nonvested restricted shares are included in the computation of basic earnings per share as the holder is entitled to full shareholder benefits during the vesting period including voting rights and sharing in nonforfeitable dividends.
 
Years Ended December 31,
 
2016
 
2015
 
2014
 
Shares
 
Per Share
Amount
 
Shares
 
Per Share
Amount
 
Shares
 
Per Share
Amount
Basic earnings per share
8,611,507

 
$
1.89

 
8,680,502

 
$
1.73

 
7,867,198

 
$
1.62

Effect of dilutive securities - stock options
9,734

 

 
7,948

 

 
10,378

 

Diluted earnings per share
8,621,241

 
$
1.89

 
8,688,450

 
$
1.73

 
7,877,576

 
$
1.62