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Dividends and Basic Earnings Per Common Share (Tables)
 9 Months Ended
Sep. 30, 2017
Dividends and Basic Earnings Per Common Share [Abstract]  
Calculation of Basic Earnings per Share
The following table calculates the basic earnings per common share for the three and nine months ended September 30, 2017 and 2016.

  
Three Months
Ended September 30,
  
Nine Months
Ended September 30,
 
(net income in thousands)
 
2017
  
2016
  
2017
  
2016
 
Net Income
 
$
8,581
  
$
7,538
  
$
24,589
  
$
22,042
 
Weighted Average Number of Common Shares Outstanding
  
810,291
   
792,387
   
809,002
   
792,223
 
Basic Earnings Per Common Share Amount
 
$
10.59
  
$
9.51
  
$
30.39
  
$
27.82