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Earnings per Share (Tables)
12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Computations of Basic and Diluted Earnings Per Share
The computations of basic and diluted EPS are set forth below:

 
For the Years Ended
December 31,
 
2017
 
2016
 
2015
 
(in thousands, except per share amounts)
Numerator for basic and diluted EPS — net income (loss) allocated to common stockholders
$
(26,651
)
 
$
60,762

 
$
25,598

Denominator for basic EPS — weighted average number of shares
32,075

 
32,043

 
31,197

Add — dilutive effect of:
 
 
 
 
 
Weighted average number of incremental shares issuable from restricted stock units

(1)
31

 
3

Denominator for diluted EPS — weighted average number of shares and dilutive potential shares
32,075

 
32,074

 
31,200

Earnings (loss) per share:
 
 
 
 
 
Basic
$
(0.83
)
 
$
1.90

 
$
0.82

Diluted
$
(0.83
)
 
$
1.89

 
$
0.82