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Comprehensive loss
6 Months Ended
Jun. 30, 2011
Comprehensive loss [Abstract]  
Comprehensive loss
5. Comprehensive loss
Accounting Standards Codification (“ASC”) 220-10-45 Comprehensive Income Other Presentation requires reporting and displaying comprehensive income (loss) and its components, which, for the Company, includes net loss and unrealized gains and losses on investments and cumulative translation gains and losses. In accordance with this guidance, the accumulated balance of other comprehensive income (loss) is disclosed as a separate component of stockholders’ equity. For the three and six months ended June 30, 2011 and 2010, comprehensive loss consisted of (in thousands):
                                 
    Three months ended     Six months ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Net loss
  $ (44,480 )   $ (42,251 )   $ (86,005 )   $ (86,951 )
Other comprehensive loss:
                               
Unrealized gain (loss) on investments
    (52 )     273       (45 )     286  
Cumulative translation (loss) gain
    4       (3 )     9       (6 )
 
                       
Comprehensive loss
  $ (44,528 )   $ (41,981 )   $ (86,041 )   $ (86,671 )