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Goodwill
 6 Months Ended
Jun. 30, 2015
Disclosure - Goodwill - Additional Information [Abstract]  
Goodwill
Goodwill
The carrying value of goodwill and the activity for the six months ended June 30, 2015 are as follows (in thousands):
Balance, December 31, 2014
$
553,335

Currency translation adjustments
(8,834
)
Balance, June 30, 2015
$
544,501



See Note 17, "Operating Segments and Related Information - Operating Segments," of the Notes to the Consolidated Financial Statements for additional information on the carrying value of goodwill by operating segment at June 30, 2015.