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NET INCOME (LOSS) PER SHARE (Tables)
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Schedule of Computation of Net Income (Loss) per Share of Common Stock
The following table presents the computation of net income (loss) per share of common stock (in thousands, except for per share data):
 
Years Ended December 31,
 
2014
 
2013
 
2012
Basic and diluted net income (loss) per share of common stock:
 
 
 
 
 
Numerator:
 
 
 
 
 
     Net income (loss)
$
9,881

 
$
(10,975
)
 
$
(19,319
)
 
 
 
 
 
 
Denominator:
 
 
 
 
 
Weighted-average shares outstanding - basic
71,897

 
58,944

 
58,538

Effect of dilutive stock options and restricted stock units
1,506

 
—

 
—

Weighted-average shares outstanding - diluted
73,403

 
58,944

 
58,538

 
 
 
 
 
 
Net income (loss) per share of common stock:
 
 
 
 
 
     Basic
$
0.14

 
$
(0.19
)
 
$
(0.33
)
     Diluted
$
0.13

 
$
(0.19
)
 
$
(0.33
)