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Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2015
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.

 
Three months ended September 30,
 
Nine months ended September 30,
(in thousands, except per share data)
2015
 
2014
 
2015
 
2014
Net income as reported
$
9,709

 
$
8,198

 
$
27,771

 
$
21,206

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

 
—

 
—

 
66

Net income available to common shareholders and assumed conversions
$
9,709

 
$
8,198

 
$
27,771

 
$
21,272

 
 
 
 
 
 
 
 
Weighted average common shares outstanding
19,995

 
19,838

 
19,970

 
19,729

Incremental shares from assumed conversions of convertible trust preferred securities
—

 
—

 
—

 
76

Additional dilutive common stock equivalents
266

 
142

 
266

 
165

Weighted average diluted common shares outstanding
$
20,261

 
$
19,980

 
$
20,236

 
$
19,970

 
 
 
 
 
 
 
 
Basic earnings per common share:
$
0.49

 
$
0.41

 
$
1.39

 
$
1.07

Diluted earnings per common share:
$
0.48

 
$
0.41

 
$
1.37

 
$
1.07