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Net Loss Per Share
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Net Loss per Share
Net Loss per Share
The following table provides a reconciliation of the numerator and denominator used in computing basic and diluted net loss per common share:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
  
 
2016
 
2015
 
2016
 
2015
Numerator:
 
 
 
 
 
  

 
  

Net loss (in thousands)
 
$
(1,231
)
 
$
(6,561
)
 
$
(14,075
)
 
$
(24,404
)
Denominator:
 
 
 
 
 
 
 
 
Weighted-average shares used to compute basic net loss per share
 
56,916,485

 
57,446,774

 
57,303,394

 
56,970,515

Effect of dilutive options, unvested shares of restricted stock awards and unvested restricted stock units
 
—

 
—

 
—

 
—

Weighted-average shares used to compute diluted net loss per share
 
56,916,485

 
57,446,774

 
57,303,394

 
56,970,515

Net loss per share:
 
 
 
 
 
 
 
 
Basic
 
$
(0.02
)
 
$
(0.11
)
 
$
(0.25
)
 
$
(0.43
)
Diluted
 
$
(0.02
)
 
$
(0.11
)
 
$
(0.25
)
 
$
(0.43
)

The following outstanding options to purchase common stock, unvested shares of restricted stock awards and unvested restricted stock units were excluded from the computation of diluted net loss per share for the periods presented as their inclusion would have been anti-dilutive:
 
 
September 30,
 
September 30,
  
 
2016
 
2015
Options to purchase common stock
 
3,875,077

 
4,170,107

Unvested shares of restricted stock awards
 
662,605

 
562,055

Unvested shares of restricted stock units
 
3,702,917

 
2,143,793