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Net Income (Loss) Per Share
 12 Months Ended
Dec. 31, 2016
Earnings Per Share [Abstract]  
Net Income (Loss) Per Share
Net Income (Loss) Per Share

The following table sets forth the computation of Net Income (Loss) Per Share for the years ended December 31, 2016, 2015 and 2014 (in thousands, except per share data):
 
2016
 
2015
 
2014
Numerator for Basic and Diluted Earnings per Share -
 
 
 
 
 
Net Income (Loss)
$
(1,096,686
)
 
$
(4,524,515
)
 
$
2,915,487

Denominator for Basic Earnings per Share -
 

 
 

 
 

Weighted Average Shares
553,384

 
545,697

 
543,443

Potential Dilutive Common Shares -
 

 
 

 
 

Stock Options/SARs
—

 
—

 
2,526

Restricted Stock/Units and Performance Units/Stock
—

 
—

 
2,570

Denominator for Diluted Earnings per Share -
 

 
 

 
 

Adjusted Diluted Weighted Average Shares
553,384

 
545,697

 
548,539

Net Income (Loss) Per Share
 

 
 

 
 

Basic
$
(1.98
)
 
$
(8.29
)
 
$
5.36

Diluted
$
(1.98
)
 
$
(8.29
)
 
$
5.32



The diluted earnings per share calculation excludes stock options, SARs, restricted stock and units and performance units and stock that were anti-dilutive.  Shares underlying the excluded stock options and SARs totaled 10.3 million, 10.2 million and 0.7 million for the years ended December 31, 2016, 2015 and 2014, respectively. For the years ended December 31, 2016 and 2015, respectively, 4.5 million and 5.3 million shares of restricted stock and restricted stock units and performance units and performance stock were excluded.