Employee Benefit Plans - Schedule of Changes in Fair Value of Plan Assets (Details) - Swiss Plan - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2021	Jan. 03, 2020
Plan assets at fair value, beginning of period	$ 6,774	$ 5,130
Actual return on plan assets	1,195	152
Plan assets at fair value, end of period	15,551	6,774
Insurance Contracts | Fair Value, Inputs, Level 3
Plan assets at fair value, beginning of period	6,774	5,130
Actual return on plan assets	1,195	152
Purchases, sales, and settlement	7,582	1,492
Plan assets at fair value, end of period	$ 15,551	$ 6,774