Employee Benefit Plans - Schedule of Changes in Fair Value of Plan Assets (Details) - Swiss Plan - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018
Plan assets at fair value, beginning of period	$ 5,130	$ 4,144
Actual return on plan assets	152	3
Plan assets at fair value, end of period	6,774	5,130
Insurance Contracts | Fair Value, Inputs, Level 3
Plan assets at fair value, beginning of period	5,130	4,144
Actual return on plan assets	152	3
Purchases, sales, and settlement	1,492	983
Plan assets at fair value, end of period	$ 6,774	$ 5,130