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EARNINGS (LOSS) PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Reconciliation of basic and diluted earnings per share computations
The following are computations of basic and diluted earnings (loss) per share (in thousands except for per share amounts):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2017
 
2016
 
2017
 
2016
Numerator for basic and diluted earnings (loss) per share:
 

 
 

 
 
 
 
Net income (loss)
$
25,880

 
$
3,966

 
$
4,487

 
$
(16,905
)
 
 
 
 
 
 
 
 
Denominator:
 

 
 

 
 
 
 
Basic shares outstanding
57,190

 
57,549

 
57,226

 
57,599

Dilutive effect of equity-based compensation awards
146

 
129

 
123

 
—

Dilutive shares outstanding
57,336

 
57,678

 
57,349

 
57,599

 
 
 
 
 
 
 
 
Basic earnings (loss) per share:
$
0.45

 
$
0.07

 
$
0.08

 
$
(0.29
)
 
 

 
 

 
 

 
 

Diluted earnings (loss) per share:
$
0.45

 
$
0.07

 
$
0.08

 
$
(0.29
)