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Fair Value Measurement (Tables)
3 Months Ended
Mar. 31, 2014
Fair Value Measurement [Abstract]  
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis
(In thousands)         Fair Value Measurements at March 31, 2014  
          Quoted Prices in     Significant Other     Significant  
          Active Markets for     Observable     Unobservable  
          Identical Assets     Inputs     Inputs  
    Total     (Level 1)     (Level 2)     (Level 3)  
Assets:                                
Short-term investments   $ 227,315     $ -     $ 227,315     $ -  
                                 
Foreign currency forward exchange contracts not accounted for using hedge accounting     96       -       96       -  
                                 
    $ 227,411     $ -     $ 227,411     $ -  

 

(In thousands)         Fair Value Measurements at December 31, 2013  
          Quoted Prices in     Significant Other     Significant  
          Active Markets for     Observable     Unobservable  
          Identical Assets     Inputs     Inputs  
    Total     (Level 1)     (Level 2)     (Level 3)  
Assets:                                
Short-term investments   $ 181,677     $ -     $ 181,677     $ -  
                                 
Foreign currency forward exchange contracts not accounted for using hedge accounting     157       -       157       -  
                                 
    $ 181,834     $ -     $ 181,834     $ -