Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Costs

Components of net periodic benefit (income) cost for the Company's defined benefit plans were as follows (in thousands):

	Three months ended
	March 31, 2023		March 27, 2022
Pension and SERPA Benefits:
Service cost	$	1,294	$	4,763
Interest cost	20,476		15,472
Expected return on plan assets	(36,519)		(31,476)
Amortization of unrecognized:
Prior service cost (credit)	188		(328)
Net (gain) loss	(181)		7,978
Settlement gain	(222)		(256)
Net periodic benefit income	$	(14,964)	$	(3,847)
Postretirement Healthcare Benefits:
Service cost	$	797	$	1,161
Interest cost	2,772		1,904
Expected return on plan assets	(4,281)		(3,809)
Amortization of unrecognized:
Prior service credit	(166)		(581)
Net (gain) loss	(1,097)		122
Net periodic benefit income	$	(1,975)	$	(1,203)