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Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 28, 2019
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Settlement loss $ 5,887      
Other Post-Retirement        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost   $ 4 $ 213 $ 175
Interest cost   149 172 170
Expected return on plan assets   (4) (3) (2)
Amortization of net actuarial loss   13 136 83
Amortization of prior service cost   0 86 88
Settlement loss   57 0 0
Curtailment loss   0 309 0
Net Periodic Benefit Cost   219 913 514
United States | Pension benefits        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost   0 699 685
Interest cost   1,134 1,193 1,231
Expected return on plan assets   (995) (1,286) (1,326)
Amortization of net actuarial loss   32 541 442
Amortization of prior service cost   0 0 53
Settlement loss   5,887 0 0
Curtailment loss   0 1,116 0
Net Periodic Benefit Cost   6,058 2,263 1,085
Foreign Plan | Pension benefits        
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]        
Service cost   205 173 148
Interest cost   121 126 114
Expected return on plan assets   (66) (42) (25)
Amortization of net actuarial loss   25 63 38
Amortization of prior service cost   6 6 6
Settlement loss   0 0 0
Curtailment loss   0 0 0
Net Periodic Benefit Cost   $ 291 $ 326 $ 281