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Goodwill (Notes)
 3 Months Ended
Mar. 29, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill
The changes in the carrying value of goodwill were as follows (in thousands):
Balance as of December 31, 2019
 
$
243,445

  Foreign exchange rate changes
 
(1,231
)
Balance as of March 29, 2020
 
$
242,214