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Acquisitions, Divestiture and Goodwill (Goodwill) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jul. 01, 2017
Dec. 30, 2017
Dec. 31, 2016
Goodwill [Roll Forward]      
Beginning balance   $ 355,263 $ 359,394
Segment allocation and acquisition adjustments     (2,171)
Foreign currency changes   4,230 (1,960)
Impairment charge   (359,493)  
Ending balance   0 355,263
Americas      
Goodwill [Roll Forward]      
Impairment charge $ 202,300    
Europe      
Goodwill [Roll Forward]      
Impairment charge 114,300    
Asia      
Goodwill [Roll Forward]      
Impairment charge $ 42,900 (42,900)  
Operating segments | Americas      
Goodwill [Roll Forward]      
Beginning balance   202,187 283,598
Segment allocation and acquisition adjustments     (81,166)
Foreign currency changes   162 (245)
Impairment charge   (202,349)  
Ending balance   0 202,187
Operating segments | Europe      
Goodwill [Roll Forward]      
Beginning balance   110,291 63,981
Segment allocation and acquisition adjustments     48,046
Foreign currency changes   3,983 (1,736)
Impairment charge   (114,274)  
Ending balance   0 110,291
Operating segments | Asia      
Goodwill [Roll Forward]      
Beginning balance   42,785 11,815
Segment allocation and acquisition adjustments     30,949
Foreign currency changes   85 21
Impairment charge   (42,870)  
Ending balance   $ 0 $ 42,785