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Shareholders' Equity and Earnings Per Common Share (Tables)
3 Months Ended
Mar. 31, 2016
Shareholders' Equity and Earnings Per Common Share [Abstract]  
Reconciliation of basic and diluted net income per share
A reconciliation of basic and diluted net income per common share follows:

  
Three Months Ended
March 31,
 
  
2016
  
2015
 
       
       
Net income
 
$
4,100
  
$
3,781
 
         
Weighted average shares outstanding (1)
  
21,751
   
22,997
 
Stock units for deferred compensation plan for non-employee directors
  
113
   
111
 
Effect of stock options
  
112
   
121
 
Restricted stock units
  
86
   
309
 
Weighted average shares outstanding for calculation of diluted earnings per share
  
22,062
   
23,538
 
         
Net income per common share
        
Basic (1)
 
$
0.19
  
$
0.16
 
Diluted
 
$
0.19
  
$
0.16
 

(1)
Basic net income per common share includes weighted average common shares outstanding during the period and participating share awards.