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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2018
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 per share data)
2018
 
2017
 
2016
Net income as reported
$
89,217

 
$
48,190

 
$
48,837

 
 
 
 
 
 
Weighted average common shares outstanding
23,100

 
22,953

 
20,003

Additional dilutive common stock equivalents
189

 
296

 
287

Weighted average diluted common shares outstanding
23,289

 
23,249

 
20,290

 
 
 
 
 
 
Basic earnings per common share:
$
3.86

 
$
2.10

 
$
2.44

Diluted earnings per common share:
$
3.83

 
$
2.07

 
$
2.41