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FAIR VALUE MEASUREMENTS (Tables)
12 Months Ended
Dec. 31, 2013
FAIR VALUE MEASUREMENTS  
Schedule of financial assets subject to fair value measurements

 

 

 
  As of
December 31, 2013
  Level 1   Level 2   Level 3  
 
  (In thousands)
 

Money market funds and cash equivalents

  $ 148,549       $ 148,549      

Marketable securities

  $ 133,581       $ 133,581      
                   

 

  $ 282,130       $ 282,130      
                   
                   


 

 
  As of
December 31, 2012
  Level 1   Level 2   Level 3  
 
  (In thousands)
 

Money market funds and cash equivalents

  $ 18,688   $ 18,688          

Marketable securities

  $ 59,065       $ 59,065      
                   

 

  $ 77,753   $ 18,688   $ 59,065