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Fair Value Measurement (Tables)
9 Months Ended
Sep. 30, 2015
Fair Value of Financial Instruments [Abstract]  
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis
(In thousands) Fair Value Measurements at September 30, 2015
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   $ 90,219     $     $ 90,219     $  
Foreign currency forward exchange contracts not
accounted for using hedge accounting
 
285    
   
285    
 
                                 

   $ 90,504      $      $ 90,504      $  
Liabilities;                                
     Interest rate swaps   $ 670     $     $ 670     $  

 

Fair Value Measurements at December 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   $ 190,152     $     $ 190,152     $  
                                 
Liabilities:                                
Foreign currency forward exchange contracts not
accounted for using hedge accounting
  $ 355     $     $ 355     $