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Earnings Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Calculation of Earnings Per 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,
2014

 
2013

 
2012

Earnings per common share - basic:
 
 
 
 
 
Net income

$40,824

 

$36,153

 

$35,074

Less dividends and undistributed earnings allocated to participating securities
(152
)
 
(156
)
 
(161
)
Net income applicable to common shareholders
40,672

 
35,997

 
34,913

Weighted average common shares
16,689

 
16,506

 
16,358

Earnings per common share - basic

$2.44

 

$2.18

 

$2.13

Earnings per common share - diluted:
 
 
 
 
 
Net income

$40,824

 

$36,153

 

$35,074

Less dividends and undistributed earnings allocated to participating securities
(151
)
 
(155
)
 
(160
)
Net income applicable to common shareholders
40,673

 
35,998

 
34,914

Weighted average common shares
16,689

 
16,506

 
16,358

Dilutive effect of common stock equivalents
183

 
158

 
43

Weighted average diluted common shares
16,872

 
16,664

 
16,401

Earnings per common share - diluted

$2.41

 

$2.16

 

$2.13