Pension and Other Postretirement Obligations (Tables)

6 Months Ended

Jun. 28, 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
Three Months Ended	June 28, 2020		June 30, 2019		June 28, 2020		June 30, 2019
	(In thousands)
Service cost	$	892	$	967	$	8	$	10
Interest cost	2,410		2,918		195		270
Expected return on plan assets	(4,004)		(4,020)		—		—
Amortization of prior service cost	45		40		—		—
Actuarial losses (gains)	673		281		(19)		(26)
Net periodic benefit cost	$	16	$	186	$	184	$	254
Six Months Ended
Service cost	$	1,824	$	1,974	$	16	$	19
Interest cost	4,747		5,878		397		542
Expected return on plan assets	(7,944)		(8,137)		—		—
Amortization of prior service cost	89		26		—		—
Actuarial losses (gains)	1,350		602		(38)		(51)
Net periodic benefit cost	$	66	$	343	$	375	$	510