Employee Benefit Plans (Schedule of Net Benefit Costs, Pension Plans) (Details) - Pension Plans, Defined Benefit - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7,414	$ 6,598	$ 6,853
Interest cost	12,876	16,546	16,146
Expected return on plan assets	(21,786)	(24,561)	(28,939)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment	0	1,547	0
Actuarial loss (gain)	20,291	27,134	17,146
Amortization of prior service cost	0	(152)	375
Net periodic benefit cost	$ 18,795	$ 24,018	$ 11,581