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Earnings per Share Earnings per Share (Tables)
6 Months Ended
Jun. 30, 2019
Earnings Per Share [Abstract]  
Schedule of reconciliation of the weighted-average common shares outstanding used in the calculation of basic EPS to the weighted-average common shares outstanding used in the calculation of diluted EPS
The following table reconciles the weighted-average common shares outstanding used in the calculation of basic EPS to the weighted-average common shares outstanding used in the calculation of diluted EPS for the three and six months ended June 30, 2019 and 2018
        
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2019
 
2018
 
2019
 
2018
 
(in thousands)
Determination of shares:
 

 
 

 
 

 
 

Weighted-average common shares outstanding
214,664

 
213,579

 
214,645

 
213,442

Assumed conversion of dilutive employee stock-based awards

 
262

 

 
325

Assumed conversion of restricted stock awards
103

 
62

 
80

 
50

Assumed conversion of performance-based restricted stock awards
838

 
658

 
795

 
689

Diluted weighted-average common shares outstanding
215,605

 
214,561

 
215,520

 
214,506


Schedule of calculation of basic and diluted EPS for the Company's common stock
The following table presents the calculation of basic and diluted EPS for the Company’s common stock for the three and six months ended June 30, 2019 and 2018
        
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2019
 
2018
 
2019
 
2018
 
(in thousands, except per share and share data)
Calculation of basic EPS:
 

 
 

 
 

 
 

Net income
$
93,033

 
$
91,998

 
$
186,043

 
$
188,770

Less: Net income allocated to participating securities
(146
)
 
(129
)
 
(291
)
 
(265
)
Net income attributable to common shareholders
$
92,887

 
$
91,869

 
$
185,752

 
$
188,505

Weighted-average common shares outstanding
214,664

 
213,579

 
214,645

 
213,442

Basic EPS
$
0.43

 
$
0.43

 
$
0.87

 
$
0.88

 
 
 
 
 
 
 
 
Calculation of diluted EPS:
 

 
 

 
 

 
 

Net income
$
93,033

 
$
91,998

 
$
186,043

 
$
188,770

Diluted weighted-average common shares outstanding
215,605

 
214,561

 
215,520

 
214,506

Diluted EPS
$
0.43

 
$
0.43

 
$
0.86

 
$
0.88

 
 
 
 
 
 
 
 
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)

 
169,324

 
1,397

 
195,529