Employee Benefit Plans - Schedule of Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2020	Dec. 28, 2018	Dec. 29, 2017
Swiss Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Current year actuarial gain (loss) on plan assets	$ 4	$ (101)	$ 98
Current year actuarial loss on benefit obligation	(2,172)	(243)	(644)
Actuarial gain (loss) recorded in current year	114	103	65
Prior service credit	93	(19)	126
Change in other comprehensive income (loss)	(1,961)	(260)	(355)
Japan Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of net transition obligation		7	8
Amortization of actuarial loss	(1)	(1)	0
Actuarial gain (loss) recorded in current year	30	(84)	(22)
Prior service credit	(1)	0	0
Change in other comprehensive income (loss)	$ 28	$ (78)	$ (14)