Employee Benefit Plans - Assumptions Used to Determine Net Periodic (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Foreign Plan
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate	1.00%	1.90%	1.90%
Expected return on plan assets	1.20%	2.10%	1.80%
Rate of compensation	0.00%	1.75%	1.75%
Weighted average assumptions used to determine benefit obligations:
Discount rate	1.00%	1.70%	2.50%
Rate of compensation	0.00%	1.75%	1.75%
Components of net periodic benefit cost:
Service cost	$ 1,070	$ 1,589	$ 1,112
Interest cost	4,038	5,676	5,467
Amortizations	1,549	991	1,394
Net periodic benefit cost	$ 2,507	$ 2,305	$ 1,712
United States
Weighted average assumptions used to determine net periodic benefit cost:
Discount rate	3.05%	4.10%	3.50%
Rate of compensation	0.00%	0.00%	0.00%
Weighted average assumptions used to determine benefit obligations:
Discount rate	2.15%	3.05%	4.10%
Rate of compensation	0.00%	0.00%	0.00%
Components of net periodic benefit cost:
Service cost	$ 0	$ 0	$ 0
Interest cost	938	1,154	1,082
Amortizations	558	375	464
Net periodic benefit cost	$ 1,496	$ 1,529	$ 1,546