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Net Income per Share (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Computation of the Company’s basic and diluted net income per share
The computation of the Company's basic and diluted net (loss) income per share is as follows:
 
Three months ended September 30,
 
Nine months ended September 30,
 
2017
 
2016
 
2017
 
2016
 
(In thousands, except per share data)
Numerator for basic and diluted (loss) income per common share:
 

 
 

 
 
 
 
Net (loss) income
$
(451,718
)
 
$
24,273

 
$
(416,075
)
 
$
76,645

Less: Net loss (income) allocated to unvested participating restricted stock
8,496

 
(338
)
 
6,921

 
(1,103
)
Net (loss) income available to common stockholders - basic
(443,222
)
 
23,935

 
(409,154
)
 
75,542

Effect of unvested participating restricted stock in two-class calculation
—

 
1

 
5

 
3

Net (loss) income available to common stockholders - diluted
$
(443,222
)
 
$
23,936

 
$
(409,149
)
 
$
75,545

Denominator:
 

 
 

 
 
 
 
Weighted average outstanding shares of common stock - basic
17,742

 
17,950

 
17,718

 
18,099

Dilutive effect of stock options
—

 
91

 
—

 
102

Weighted average outstanding shares of common stock - diluted
17,742

 
18,041

 
17,718

 
18,201

Net (loss) income per common share:
 

 
 

 
 
 
 
Basic
$
(24.98
)
 
$
1.33

 
$
(23.09
)
 
$
4.17

Diluted
$
(24.98
)
 
$
1.33

 
$
(23.09
)
 
$
4.15