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EARNINGS PER SHARE (Tables)
 9 Months Ended
Sep. 30, 2017
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following is a calculation of basic and diluted earnings per share and weighted-average shares outstanding (in thousands, except per share amounts):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
Net income
$
1,058

 
$
(16,841
)
 
$
4,220

 
$
(10,876
)
 
 
 
 
 
 
 
 
Weighted-average shares outstanding—basic
48,021

 
47,719

 
47,858

 
48,596

Add shares issuable from stock-based awards
481

 
—

 
539

 
—

Weighted-average shares outstanding—diluted
48,502

 
47,719

 
48,397

 
48,596

 
 
 
 
 
 
 
 
Basic earnings per share
$
0.02

 
$
(0.35
)
 
$
0.09

 
$
(0.22
)
Diluted earnings per share
$
0.02

 
$
(0.35
)
 
$
0.09

 
$
(0.22
)