XML 17 R9.htm IDEA: XBRL DOCUMENT v2.3.0.15
Comprehensive Loss
9 Months Ended
Sep. 30, 2011
Comprehensive Loss and Stockholders' Equity [Abstract] 
Comprehensive Loss
4. Comprehensive Loss
The components of comprehensive loss for the three and nine months ended September 30, 2011 and 2010 are as follows:
                                 
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2011     2010     2011     2010  
 
                               
Net loss
  $ (5,276,465 )   $ (5,273,462 )   $ (18,006,096 )   $ (15,625,405 )
Change in net unrealized (losses) gains on investments
    (33,381 )     8,185       (33,548 )     (2,475 )
 
                       
Comprehensive loss
  $ (5,309,846 )   $ (5,265,277 )   $ (18,039,644 )   $ (15,627,880 )