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Earnings Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Calculation of Earnings Per Common Share
The following table presents the calculation of earnings per common share:
(Dollars and shares in thousands, except per share amounts)
 
 
 
 
 
Years ended December 31,
2016

 
2015

 
2014

Earnings per common share - basic:
 
 
 
 
 
Net income

$46,481

 

$43,465

 

$40,824

Less dividends and undistributed earnings allocated to participating securities
(97
)
 
(126
)
 
(152
)
Net income applicable to common shareholders
46,384

 
43,339

 
40,672

Weighted average common shares
17,081

 
16,879

 
16,689

Earnings per common share - basic

$2.72

 

$2.57

 

$2.44

Earnings per common share - diluted:
 
 
 
 
 
Net income

$46,481

 

$43,465

 

$40,824

Less dividends and undistributed earnings allocated to participating securities
(97
)
 
(126
)
 
(151
)
Net income applicable to common shareholders
46,384

 
43,339

 
40,673

Weighted average common shares
17,081

 
16,879

 
16,689

Dilutive effect of common stock equivalents
127

 
188

 
183

Weighted average diluted common shares
17,208

 
17,067

 
16,872

Earnings per common share - diluted

$2.70

 

$2.54

 

$2.41