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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Summary of Per Common Share Data and Amounts
The following table presents a summary of per common share data and amounts for the periods indicated.

 
Years ended December 31,
(in thousands, except share and per share data)
2016
 
2015
 
2014
Net income as reported
$
48,837

 
$
38,450

 
$
27,173

 
 
 
 
 
 
Impact of assumed conversions
 
 
 
 
 
Interest on 9% convertible trust preferred securities, net of income tax

 

 
66

Net income available to common shareholders after assumed conversions
$
48,837

 
$
38,450

 
$
27,239

 
 
 
 
 
 
Weighted average common shares outstanding
20,003

 
19,984

 
19,761

Incremental shares from assumed conversions of convertible trust preferred securities

 

 
57

Additional dilutive common stock equivalents
287

 
333

 
292

Weighted average diluted common shares outstanding
20,290

 
20,317

 
20,110

 
 
 
 
 
 
Basic earnings per common share:
$
2.44

 
$
1.92

 
$
1.38

Diluted earnings per common share:
$
2.41

 
$
1.89

 
$
1.35