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Note 9 - Net Income Per Common Share
 6 Months Ended
Jun. 30, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
Note
9
.
Net Income per Common Share
 
The calculation of net income per common share for the six and three months ended June 30, 2016 and 2015 was as follows.
 
 
  
Six Months Ended June 30,
    
Three Months Ended June 30,
  
(dollars and shares in thousands, except per share data)
 
2016
    
2015
    
2016
    
2015
  
Basic:
                                
Net income available to common shareholders
   $ 47,467     $ 39,997     $ 24,145     $ 20,759  
Average common shares outstanding
     33,554       32,231       33,588       33,367  
Basic net income per common share
   $ 1.41     $ 1.24     $ 0.72     $ 0.62  
                                 
Diluted:
                                
Net income available to common shareholders
   $ 47,467     $ 39,997     $ 24,145     $ 20,759  
Average common shares outstanding
     33,554       32,231       33,588       33,367  
Adjustment for common share equivalents
     592       664       595       631  
Average common shares outstanding-diluted
     34,146       32,895       34,183       33,998  
Diluted net income per common share
   $ 1.39     $ 1.22     $ 0.71     $ 0.61  
                                 
Anti-dilutive shares
     6.5       13.0       6.5       13.0