Other Postretirement Benefits - Schedule of Components of Net Periodic Postretirement Benefit Income (Details) - Other Postretirement Benefit Plans - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 27	$ 21	$ 367
Interest cost	1,602	1,476	1,881
Amortization and other costs	3,375	4,735	3,621
Amortization of prior service credit	(4,766)	(6,157)	(7,755)
Effect of settlement/curtailment	0	0	(32,737)
Net periodic pension (income)/cost	$ 238	$ 75	$ (34,623)