Employee Benefit and Pension Plans - Amounts Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Defined Benefit Plan, Accumulated Other Comprehensive Income, Before Tax Roll Forward [Roll Forward]
Beginning balance	$ (5,313)	$ 0
Net actuarial loss arising in current year	(1,680)	(5,562)
Amortization of net actuarial loss	1,638	234
Foreign currency translation gain/(loss)	(12)	15
Ending balance	(5,367)	$ (5,313)
Net actuarial loss expected to be recognized in next fixcal year	$ 1,600