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Net Income per Common Share (Tables)
12 Months Ended
Dec. 31, 2018
Earnings Per Common Share  
Schedule of calculation of net income per common share

The calculation of net income per common share for the years ended December 31 was as follows:

 

(dollars and shares in thousands, except per share data)   2018     2017     2016  
Basic:                        
Net income   $ 152,276     $ 100,232     $ 97,707  
Average common shares outstanding     34,306       34,139       33,587  
Basic net income per common share   $ 4.44     $ 2.94     $ 2.91  
                         
Diluted:                        
Net income   $ 152,276     $ 100,232     $ 97,707  
Average common shares outstanding     34,306       34,139       33,587  
Adjustment for common share equivalents     137       182       594  
Average common shares outstanding-diluted     34,443       34,321       34,181  
Diluted net income per common share   $ 4.42     $ 2.92     $ 2.86  
                         
Anti-dilutive shares                 7