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Earnings (Loss) Per Share (Tables)
 9 Months Ended
Sep. 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 September 30,
 
Nine Months Ended September 30,
 
2014
 
2013
 
2014
 
2013
Net income (loss) per share:
(In thousands, except per share amounts)
Numerator:
 

 
 

 
 
 
 
Net income (loss)
$
5,513

 
$
(5,725
)
 
$
18,360

 
$
(23,971
)
Denominator:
 
 
 
 
 
 
 
Weighted-average shares outstanding - basic
114,523

 
112,640

 
114,080

 
112,144

Effect of potential dilutive common shares
3,683

 
—

 
3,460

 
—

Weighted-average shares outstanding - diluted
118,206

 
112,640

 
117,540

 
112,144

Basic net income (loss) per share
$
0.05

 
$
(0.05
)
 
$
0.16

 
$
(0.21
)
Diluted net income (loss) per share
$
0.05

 
$
(0.05
)
 
$
0.16

 
$
(0.21
)