Employee Benefit Plans - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2021	Jul. 05, 2020	Jul. 04, 2021	Jul. 05, 2020
Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Interest cost	$ 579	$ 870	$ 1,151	$ 1,761
Expected return on assets	(860)	(1,038)	(1,709)	(2,102)
Amortization of prior service cost	29	26	58	52
Amortization of net actuarial losses	409	320	813	646
Net periodic benefit cost	157	178	313	357
Salary Continuation Plan | United States
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Interest cost	177	235	353	469
Amortization of net actuarial losses	186	139	372	279
Net periodic benefit cost	363	374	725	748
nora Defined Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Service cost	277	259	554	517
Interest cost	104	110	207	221
Amortization of net actuarial losses	92	110	184	110
Net periodic benefit cost	$ 473	$ 479	$ 945	$ 848