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Earnings per Share (Tables)
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Net Income (Loss) Per Share
The following table sets forth the computation of basic and diluted earnings per share:
 
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
 
2017
 
2016
 
2017
 
2016
 
 
 
(In thousands, except per share data)
 
Numerator:
 
 
 
 
 
 
 
 
 
Net income (loss)
 
$
7,195

 
$
(46,937
)
 
$
20,885

 
$
(87,817
)
 
Denominator:
 
 

 
 

 
 
 
 
 
Denominator for basic earnings per share – weighted-average common shares outstanding
 
162,357

 
116,120

 
158,259

 
110,415

 
Effect of dilutive securities:
Stock options and restricted shares
 
1,448

 
—

 
1,683

 
—

 
Denominator for diluted earnings per share – adjusted weighted-average shares and assumed exercise of options and restricted shares
 
163,805

 
116,120

 
159,942

 
110,415

 
 
 
 
 
 
 
 
 
 
 
Net income (loss) per common share - basic
 
$
0.04

 
$
(0.40
)
 
$
0.13

 
$
(0.80
)
 
 
 
 
 
 
 
 
 
 
 
Net income (loss) per common share - diluted
 
$
0.04

 
$
(0.40
)
 
$
0.13

 
$
(0.80
)