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Earnings Per Share
6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
The following table sets forth the components used in the computation of basic and diluted earnings per share (in thousands, except share and per share amounts):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
Numerator:
 

 
 

 
 

 
 

Net income available to common stockholders
$
32,714

 
$
73,926

 
$
40,907

 
$
102,476

Denominator:
 

 
 

 
 

 
 

Basic weighted-average shares outstanding
155,603,699

 
161,826,275

 
157,335,296

 
161,882,378

Effect of dilutive shares:
 

 
 
 
 

 
 

Stock options and unvested restricted stock units
536,844

 
433,008

 
589,265

 
363,021

Diluted weighted-average shares outstanding
156,140,543

 
162,259,283

 
157,924,561

 
162,245,399

Earnings per share
 

 
 

 
 

 
 

Basic
$
0.21

 
$
0.46

 
$
0.26

 
$
0.63

Diluted
$
0.21

 
$
0.46

 
$
0.26

 
$
0.63

Antidilutive stock options and unvested restricted stock not included in diluted earnings per share
3,889,923

 
5,929,877

 
3,862,763

 
5,123,183