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Comprehensive Income
9 Months Ended
Sep. 30, 2011
Comprehensive Income and Accumulated Other Comprehensive Income [Abstract] 
COMPREHENSIVE INCOME
NOTE 15. COMPREHENSIVE INCOME
Comprehensive income consists of net income, foreign currency translation adjustments and net unrealized holding gains (losses) on available-for-sale investments. Our comprehensive income for the three months and nine months ended September 30, 2011 and 2010 is presented below (in thousands):
                                 
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2011     2010     2011     2010  
 
                               
Net income
  $ 6,592     $ 19,948     $ 39,084     $ 39,784  
Unrealized holding gain (loss) on available-for-sale securities
    (25 )     6       (38 )     13  
Cumulative translation adjustment
    (271 )     4,074       1,497       (2,377 )
 
                       
Comprehensive income
  $ 6,296     $ 24,028     $ 40,543     $ 37,420