Employee Benefit and Pension Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Retirement Benefits [Abstract]
Service cost	$ 2,061	$ 466
Interest cost	2,075	512
Expected return on plan assets	(2,371)	(653)
Amortization of actuarial loss	1,638	234
Total net periodic benefit cost	$ 3,403	$ 559