Employee Benefit Plans (Tables)

3 Months Ended

Mar. 27, 2022

Retirement Benefits [Abstract]

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 27, 2022		March 28, 2021
Pension and SERPA Benefits:
Service cost	$	4,763	$	6,348
Interest cost	15,472		15,470
Expected return on plan assets	(31,476)		(32,720)
Amortization of unrecognized:
Prior service credit	(328)		(312)
Net loss	7,978		18,386
Settlement (gain) loss	(256)		816
Net periodic benefit (income) cost	$	(3,847)	$	7,988
Postretirement Healthcare Benefits:
Service cost	$	1,161	$	1,288
Interest cost	1,904		1,626
Expected return on plan assets	(3,809)		(3,495)
Amortization of unrecognized:
Prior service credit	(581)		(581)
Net loss	122		264
Net periodic benefit income	$	(1,203)	$	(898)