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Earnings Per Share
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE
Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during each period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the three and six months ended June 30, 2013, 1,202,100 shares of common stock equivalents related to equity-based awards have not been included in the diluted per share calculation as the shares would be antidilutive. For the three and six months ended June 30, 2012, 632,213 shares of common stock equivalents related to equity-based awards have not been included in the diluted per share calculation as the shares would be antidilutive. The 3.25% Convertible Senior Notes were not included in the computation of diluted earnings per share for the three and six months ended June 30, 2013 and 2012 because there is no excess value upon conversion over the principal amount of the Notes.
The effect of potentially dilutive stock outstanding as of June 30, 2013 and 2012 are as follows (in thousands, except per share data):
 
Three months ended June 30, 2013
 
Six months ended June 30, 2013
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-Share
Amount
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-Share
Amount
Basic EPS
 
 
 
 
 
 
 
 
 
 
 
Net income (loss) available to common stockholders
$
(35,040
)
 
99,833

 
$
(0.35
)
 
$
(22,770
)
 
94,918

 
$
(0.24
)
Effect of Dilutive Securities
 
 
 
 
 
 
 
 
 
 
 
Equity awards
—

 
—

 
 
 
—

 
—

 
 
Diluted EPS
 
 
 
 
 
 
 
 
 
 
 
Net income (loss) available to common stockholders
$
(35,040
)
 
99,833

 
$
(0.35
)
 
$
(22,770
)
 
94,918

 
$
(0.24
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Three months ended June 30, 2013
 
Six months ended June 30, 2012
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-Share
Amount
 
Income
(Numerator)
 
Shares
(Denominator)
 
Per-Share
Amount
Basic EPS
 
 
 
 
 
 
 
 
 
 
 
Net income (loss) available to common stockholders
$
22,973

 
89,631

 
$
0.26

 
$
26,948

 
89,611

 
$
0.30

Effect of Dilutive Securities
 
 
 
 
 
 
 
 
 
 
 
Equity awards
—

 
102

 
 
 
—

 
166

 
 
Diluted EPS
 
 
 
 
 
 
 
 
 
 
 
Net income (loss) available to common stockholders
$
22,973

 
89,733

 
$
0.26

 
$
26,948

 
89,777

 
$
0.30