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NET LOSS PER SHARE
 6 Months Ended
Jun. 30, 2011
NET LOSS PER SHARE

(4) NET LOSS PER SHARE

Basic and diluted net loss per share is computed by dividing net loss by the weighted average number of common shares outstanding. Diluted net loss per share excludes the effect of outstanding potentially dilutive securities because they are anti-dilutive. The following table shows the potentially dilutive options, unvested restricted stock awards and warrants outstanding for the six months ended June 30, 2011 and 2010 (in thousands):

   Six Months Ended June 30,
   2011  2010
       
Options outstanding   2,139    3,185 
Unvested restricted stock awards outstanding   —      606 
Warrants outstanding   3,977    3,977 
Common stock related to convertible note outstanding   37,500    —