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Goodwill (Tables)
 12 Months Ended
Dec. 29, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of changes in the carrying amount of goodwill
The changes in the carrying amount of goodwill were as follows (in thousands):
 
Americas
 
Europe
 
Asia
 
Total
Balance at December 31, 2016
$
202,187

 
$
110,291

 
$
42,785

 
$
355,263

Foreign currency changes
162

 
3,983

 
85

 
4,230

Impairment charges
(202,349
)
 
(114,274
)
 
(42,870
)
 
(359,493
)
Balance at December 30, 2017
$
—

 
$
—

 
$
—

 
$
—