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Employee Benefit Plans - Fair Value of Plan Assets (Details) - Pension benefits - USD ($)
$ in Thousands
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
United States      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 0 $ 28,729 $ 31,754
United States | NAV      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   4,296  
United States | Fixed income funds | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   12,852  
United States | Fixed income funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   12,852  
United States | Fixed income funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   0  
United States | Fixed income funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   0  
United States | Equity funds | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   11,581  
United States | Equity funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   11,581  
United States | Equity funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   0  
United States | Equity funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value   0  
Foreign Plan      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 973 726 $ 557
Foreign Plan | Mutual funds | Level 1, 2 and 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 973 726  
Foreign Plan | Mutual funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 973 726  
Foreign Plan | Mutual funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value 0 0  
Foreign Plan | Mutual funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Total assets at fair value $ 0 $ 0