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EARNINGS (LOSS) PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
Schedule of earnings per share, basic and diluted
A reconciliation of the numerators and denominators of the basic and diluted earnings (loss) per share calculations for the three and six months ended June 30, 2013 and 2012 were as follows:

 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Earnings (loss) per share ("EPS"):
 
 

 
 

 
 

 
 

Basic
 
$
(0.18
)
 
$
0.01

 
$
(0.43
)
 
$
(0.09
)
Diluted
 
$
(0.18
)
 
$
0.01

 
$
(0.43
)
 
$
(0.09
)
EPS numerator - basic and diluted:
 
 

 
 

 
 

 
 
Net income (loss)
 
$
(5,811
)
 
$
394

 
$
(14,052
)
 
$
(2,826
)
EPS denominator (in thousands):
 
 

 
 

 
 

 
 
Weighted average common stock outstanding - basic
 
32,717

 
32,122

 
32,532

 
31,956

Common stock equivalents: stock options and other stock-based awards (a)
 
—

 
364

 
—

 
—

Weighted average number of common stock outstanding - diluted
 
32,717

 
32,486

 
32,532

 
31,956


(a)
For the periods in which net losses are presented, the diluted weighted average number of shares of common stock outstanding did not differ from the basic weighted average number of shares of common stock outstanding because the effects of any potential common stock equivalents (see Note 5 for further details on outstanding stock options, unvested restricted stock units and unvested restricted stock) were anti-dilutive and therefore not included in the calculation of the denominator of dilutive earnings per share.
Schedule of antidilutive securities excluded from computation of earnings per share
The weighted average number of shares outstanding used in the computation of diluted net income (loss) per share for the three and six months ended June 30, 2013 and 2012 did not include the effect of the following potentially outstanding shares of common stock because the effect would have been anti-dilutive:
 
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Unvested restricted stock
 
811,107

 
557,830

 
811,107

 
1,254,433

Unvested restricted stock units
 
110,200

 
—

 
110,200

 
100,000

Stock options
 
1,050,450

 
1,381,650

 
1,050,450

 
1,381,650

Total
 
1,971,757

 
1,939,480

 
1,971,757

 
2,736,083