Employee Benefit and Pension Plans - Obligations and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 104,624	$ 106,474
Service cost	2,061	466
Interest cost	2,075	512
Benefits paid	(1,925)	(194)
Actuarial loss	9,134	236
Foreign currency exchange rate changes	(2,735)	(2,870)
Benefit obligation at end of year	113,234	104,624
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	63,064	69,614
Actual return on plan assets	2,371	653
Payments	(1,397)	0
Employee contributions	715	0
Employer contributions	53	0
Actuarial gain/(loss)	6,672	(5,319)
Foreign currency exchange rate changes	(1,701)	(1,884)
Fair value of plan assets at end of year	69,777	63,064
Net liability recognized	(43,457)	(41,560)
Accumulated benefit obligation	$ 110,800	$ 100,200