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Per Share Information (Tables)
9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Basic and Diluted Earnings Per Share Attributable to Common Stock
The amounts used to compute the basic and diluted earnings per share attributable to common stock for the three and nine months ended September 30, 2017 and 2016 are illustrated below (in thousands):

 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2017

2016
 
2017
 
2016
Amounts attributable to common stock:
 

 
 

 
 
 
 
Net income from continuing operations
$
89,313

 
$
73,137

 
$
201,417

 
$
110,195

Net income from discontinued operations

 
605

 

 
605

Net income attributable to common stock
$
89,313

 
$
73,742

 
$
201,417

 
$
110,800

 
 
 
 
 
 
 
 
Weighted average shares:
 

 
 

 
 
 
 
Weighted average shares outstanding for basic earnings per share attributable to common stock
157,484

 
155,024

 
155,796

 
158,090

Effect of dilutive unvested non-participating stock-based awards
1,136

 

 
997

 

Weighted average shares outstanding for diluted earnings per share attributable to common stock
158,620

 
155,024

 
156,793

 
158,090