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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Earnings per share reconciliation
Information relating to the calculations of our income per common share is summarized as follows:
 
  
Three Months Ended September 30,
  
Nine Months Ended September 30,
 
  
2017
  
2016
  
2017
  
2016
 
  
(dollars in thousands, except for per share data)
 
Weighted-average shares outstanding - basic
  
12,172,586
   
12,104,379
   
12,140,689
   
11,324,660
 
Dilution
  
150,986
   
79,360
   
107,525
   
51,193
 
Weighted-average share outstanding - diluted
  
12,323,572
   
12,183,739
   
12,248,214
   
11,375,853
 
                 
Net income available to common stockholders
 
$
1,121
  
$
539
  
$
2,753
  
$
12,864
 
                 
Net income per share - basic
 
$
0.09
  
$
0.04
  
$
0.23
  
$
1.14
 
Net income per share - diluted
 
$
0.09
  
$
0.04
  
$
0.22
  
$
1.13