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Nature of Operations and Summary of Significant Accounting Policies - Intangible Assets By Major Asset Class (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 27, 2020
Dec. 28, 2019
Acquired Definite-Lived Intangible Assets [Line Items]    
Gross $ 255,992 $ 252,085
Accumulated Amortization (104,521) (95,333)
Currency Translation (8,057) (6,870)
Net 143,414 149,882
Acquired Intangible Assets [Abstract]    
Gross 280,092 276,185
Currency Translation (8,257) (6,956)
Net 167,314 173,896
Tradenames    
Acquired Indefinite-Lived Intangible Assets [Line Items]    
Gross 24,100 24,100
Currency Translation (200) (86)
Net 23,900 24,014
Customer relationships    
Acquired Definite-Lived Intangible Assets [Line Items]    
Gross 174,423 171,583
Accumulated Amortization (58,560) (51,798)
Currency Translation (5,161) (4,141)
Net 110,702 115,644
Product technology    
Acquired Definite-Lived Intangible Assets [Line Items]    
Gross 56,568 56,011
Accumulated Amortization (29,712) (27,819)
Currency Translation (1,878) (1,709)
Net 24,978 26,483
Tradenames    
Acquired Definite-Lived Intangible Assets [Line Items]    
Gross 6,753 6,527
Accumulated Amortization (2,677) (2,421)
Currency Translation (427) (427)
Net 3,649 3,679
Other    
Acquired Definite-Lived Intangible Assets [Line Items]    
Gross 18,248 17,964
Accumulated Amortization (13,572) (13,295)
Currency Translation (591) (593)
Net $ 4,085 $ 4,076