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NET LOSS PER SHARE
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Net Loss Per Share
NET LOSS PER SHARE
We present both basic and diluted net loss per share on the face of our consolidated statements of operations in accordance with the authoritative guidance on earnings per share. Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding for the period. Diluted net income per share of common stock is computed using the weighted-average number of shares of common stock outstanding plus the effect of common stock equivalents, unless the common stock equivalents are anti-dilutive. Potential dilutive common stock includes stock options and restricted stock units.
The following table summarizes the incremental shares of common stock from potentially dilutive securities, calculated using the treasury stock method (in thousands, except for per share data):
 
Years Ended December 31,
 
2013
 
2012
 
2011
Basic and diluted net loss per share of common stock:
 
 
 
 
 
Numerator:
 
 
 
 
 
     Net loss
$
(10,975
)
 
$
(19,319
)
 
$
(17,950
)
Denominator:
 
 
 
 
 
Weighted-average shares outstanding - basic
58,944

 
58,538

 
55,299

Effect of dilutive potential common shares from stock options and restricted stock units
—

 
—

 
—

Weighted-average shares outstanding - diluted
58,944

 
58,538

 
55,299

Net loss per share of common stock:
 
 
 
 
 
     Basic and diluted
$
(0.19
)
 
$
(0.33
)
 
$
(0.32
)

All outstanding options to purchase our common stock and restricted stock units are potentially dilutive securities. As of December 31, 2013, 2012 and 2011, the combined total of options to purchase common stock and restricted stock units outstanding were 5.5 million, 7.6 million and 6.7 million, respectively. However, since we had net losses for each of the years ended December 31, 2013, 2012 and 2011, no potentially dilutive securities were included in the computation of diluted shares for those years as inclusion of such shares would have been anti-dilutive. Accordingly, basic and diluted net loss per share were the same in each period reported.