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Accumulated Other Comprehensive Loss (Tables)
9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Activity within Accumulated Other Comprehensive Loss

Activity within accumulated other comprehensive loss for the nine months ended September 30, 2018 and 2017, which consists of foreign currency translation adjustments, were as follows:

 

(in thousands)

   Accumulated
other
comprehensive
loss
 

Balance at December 31, 2017

   $ (77,356

Other comprehensive loss

     (11,110
  

 

 

 

Balance at September 30, 2018

   $ (88,466
  

 

 

 
     Accumulated
other
comprehensive
loss
 

Balance at December 31, 2016

   $ (94,100

Other comprehensive income

     14,526  
  

 

 

 

Balance at September 30, 2017

   $ (79,574