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Earnings (Loss) Per Share (Tables)
 6 Months Ended
Jun. 30, 2014
Earnings Per Share [Abstract]  
Computation of basic and diluted loss per share
The following table sets forth the computation of basic and diluted net income (loss) per share:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2014
 
2013
 
2014
 
2013
Net income (loss) per share:
 
(In thousands, except per share amounts)
Numerator:
 
 

 
 

 
 
 
 
Net income (loss)
 
$
5,043

 
$
(7,844
)
 
$
12,847

 
$
(18,246
)
Denominator:
 
 
 
 
 
 
 
 
Weighted-average shares outstanding - basic
 
114,116

 
112,183

 
113,854

 
111,892

Effect of potential dilutive common shares
 
3,282

 
—

 
2,879

 
—

Weighted-average shares outstanding - diluted
 
117,398

 
112,183

 
116,733

 
111,892

Basic net income (loss) per share
 
$
0.04

 
$
(0.07
)
 
$
0.11

 
$
(0.16
)
Diluted net income (loss) per share
 
$
0.04

 
$
(0.07
)
 
$
0.11

 
$
(0.16
)