Net Loss Per Share
6 Months Ended
Jun. 30, 2012
Net Loss Per Share [Abstract]  
Net Loss per Share

3. Net Loss per Share

Basic and diluted net loss per share have been computed using the weighted-average number of shares of common stock outstanding during the period. We have outstanding options, restricted stock units and warrants that are not used in the calculation of diluted net loss per share because to do so would be antidilutive. The following instruments were excluded from the calculation of diluted net loss per share because their effects would be antidilutive:

 

                                 
    Three months ended
June 30,
    Six months ended
June 30,
 
    2012     2011     2012     2011  

Outstanding options

    4,213,501       4,493,101       4,213,501       4,493,101  

Restricted stock units

    86,197       39,300       86,197       39,300  

Outstanding warrants

    5,806,853       6,435,496       5,806,853       6,435,496  
   

 

 

   

 

 

   

 

 

   

 

 

 

Total

    10,106,551       10,967,897       10,106,551       10,967,897