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Net Income (Loss) Per Share
 6 Months Ended
Jun. 30, 2016
Earnings Per Share [Abstract]  
Net Income (Loss) Per Share [Text Block]
  Net Income (Loss) Per Share

The following table sets forth the computation of Net Income (Loss) Per Share for the three-month and six-month periods ended June 30, 2016 and 2015 (in thousands, except per share data):
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2016
 
2015
 
2016
 
2015
Numerator for Basic and Diluted Earnings Per Share -
 
 
 
 
 
 
 
Net Income (Loss)
$
(292,558
)
 
$
5,268

 
$
(764,334
)
 
$
(164,480
)
Denominator for Basic Earnings Per Share -
 

 
 

 
 

 
 

Weighted Average Shares
547,335

 
545,504

 
547,029

 
545,245

Potential Dilutive Common Shares -
 

 
 

 
 

 
 

Stock Options/SARs
—

 
1,960

 
—

 
—

Restricted Stock/Units and Performance Units/Stock
—

 
2,219

 
—

 
—

Denominator for Diluted Earnings Per Share -
 

 
 

 
 

 
 

Adjusted Diluted Weighted Average Shares
547,335

 
549,683

 
547,029

 
545,245

Net Income (Loss) Per Share
 

 
 

 
 

 
 

Basic
$
(0.53
)
 
$
0.01

 
$
(1.40
)
 
$
(0.30
)
Diluted
$
(0.53
)
 
$
0.01

 
$
(1.40
)
 
$
(0.30
)


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 10.2 million and 2.0 million shares for the three months ended June 30, 2016 and 2015, respectively, and 10.4 million and 10.0 million shares for the six months ended June 30, 2016 and 2015, respectively. For both the three months and six months ended June 30, 2016, 4.6 million shares of restricted stock, restricted stock units and performance units were excluded. For the three months and six months ended June 30, 2015, zero and 5.5 million shares, respectively, of restricted stock, restricted stock units and performance units were excluded.