XML 34 R16.htm IDEA: XBRL DOCUMENT v2.4.0.6
Comprehensive Income
12 Months Ended
Dec. 31, 2011
Comprehensive Income [Abstract]  
Comprehensive Income

10. Comprehensive Income

Comprehensive income includes unrealized gains and losses on short-term investments of corporate notes, bonds, and commercial paper and U.S. government agency and government sponsored enterprise debt and equity securities. The following table sets forth the calculation of comprehensive income (in thousands):

 

                         
    Year Ended December 31,  
    2011     2010     2009  

Net income (loss)

  $ (159,606   $ 12,346     $ 4,752  

Change in unrealized gain (loss) on investments, after tax

    (25     (8     (71
   

 

 

   

 

 

   

 

 

 

Total comprehensive income (loss)

  $ (159,631   $ 12,338     $ 4,681