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Earnings Per Common Share
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Common Share
Earnings Per Common Share  
 
The following is a computation of basic and diluted earnings per common share for the years ended December 31, 2014, 2013 and 2012: 
 
 (in thousands, except per share data)
2014
 
2013
 
2012
NUMERATORS:
 
 
 
 
 
Net income
$
147,520

 
$
98,361

 
$
101,891

Less:
 
 
 
 
 
Dividends and undistributed earnings allocated to participating securities (1)
484

 
788

 
682

Net earnings available to common shareholders
$
147,036

 
$
97,573

 
$
101,209

DENOMINATORS:
 
 
 
 
 
Weighted average number of common shares outstanding - basic
186,550

 
111,938

 
111,935

Effect of potentially dilutive common shares (2)
994

 
238

 
216

Weighted average number of common shares outstanding - diluted
187,544

 
112,176

 
112,151

EARNINGS PER COMMON SHARE:
 
 
 
 
 
Basic
$
0.79

 
$
0.87

 
$
0.90

Diluted
$
0.78

 
$
0.87

 
$
0.90

 
(1)
Represents dividends paid and undistributed earnings allocated to nonvested restricted stock awards. 
(2)
Represents the effect of the assumed exercise of stock options, vesting of non-participating restricted shares, and vesting of restricted stock units, based on the treasury stock method. 

The following table presents the weighted average outstanding securities that were not included in the computation of diluted earnings per common share because their effect would be anti-dilutive for the years ended December 31, 2014, 2013 and 2012. 
 
(in thousands)
2014
 
2013
 
2012
Stock options
443

 
669

 
1,306