Pension and Other Postretirement Obligations (Tables)

3 Months Ended

Mar. 29, 2020

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Costs

The following table provides the components of net periodic benefit costs for our pension and other postretirement benefit plans: 

	Pension Obligations				Other Postretirement Obligations
	March 29, 2020		March 31, 2019		March 29, 2020		March 31, 2019
	(In thousands)
Three Months Ended
Service cost	$	932	$	1,007	$	8	$	10
Interest cost	2,337		2,960		202		272
Expected return on plan assets	(3,940)		(4,116)		—		—
Amortization of prior service cost (credit)	44		(14)		—		—
Actuarial losses (gains)	677		321		(19)		(26)
Net periodic benefit cost	$	50	$	158	$	191	$	256