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Comprehensive Loss
6 Months Ended
Jun. 30, 2011
Comprehensive Loss/Stockholders' Equity [Abstract]  
Comprehensive Loss
Note 4. Comprehensive Loss
The components of comprehensive loss are as follows (in thousands):
                                 
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2010     2011     2010     2011  
 
                               
Net loss
  $ (11,315 )   $ (12,641 )   $ (24,491 )   $ (25,991 )
Change in unrealized net gain/(loss) on marketable securities
    4       (15 )     (37 )     14  
 
                       
Comprehensive loss
  $ (11,311 )   $ (12,656 )   $ (24,528 )   $ (25,977 )
 
                       
Accumulated other comprehensive loss equals the unrealized net gains and losses on marketable securities which are the only components of other comprehensive loss included in the Company’s financial statements.