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Net Income (Loss) Per Share
 6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Net Income (Loss) Per Share [Text Block]
3.    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, 2015 and 2014 (in thousands, except per share data):
 
Three Months Ended 
 June 30,
 
Six Months Ended 
 June 30,
 
2015
 
2014
 
2015
 
2014
Numerator for Basic and Diluted Earnings Per Share -
 
 
 
 
 
 
 
Net Income (Loss)
$
5,268

 
$
706,353

 
$
(164,480
)
 
$
1,367,281

Denominator for Basic Earnings Per Share -
 

 
 

 
 

 
 

Weighted Average Shares
545,504

 
543,099

 
545,245

 
542,675

Potential Dilutive Common Shares -
 

 
 

 
 

 
 

Stock Options/SARs
1,960

 
2,759

 
—

 
2,597

Restricted Stock/Units and Performance Units/Stock
2,219

 
2,818

 
—

 
2,774

Denominator for Diluted Earnings Per Share -
 

 
 

 
 

 
 

Adjusted Diluted Weighted Average Shares
549,683

 
548,676

 
545,245

 
548,046

Net Income (Loss) Per Share
 

 
 

 
 

 
 

Basic
$
0.01

 
$
1.30

 
$
(0.30
)
 
$
2.52

Diluted
$
0.01

 
$
1.29

 
$
(0.30
)
 
$
2.49



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 2.0 million and 6 thousand shares for the three months ended June 30, 2015 and 2014, respectively, and 10.0 million and 0.1 million shares for the six months ended June 30, 2015 and 2014, respectively. For the six months ended June 30, 2015, 5.5 million shares of restricted stock and restricted stock units and performance units and performance stock were excluded.