Benefit Plans (Tables)

3 Months Ended

Apr. 01, 2018

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Pension Cost

The components of net periodic pension cost were as follows:

	First Quarter
(in thousands)	2018			2017
Service cost	$	1,412		$	150
Interest cost		2,856			2,979
Expected return on plan assets		(3,852	)		(3,399	)
Recognized net actuarial loss		933			807
Amortization of prior service cost		6			7
Net periodic pension cost	$	1,355		$	544

Components of Net Periodic Postretirement Benefit Cost

The components of net periodic postretirement benefit cost were as follows:

	First Quarter
(in thousands)	2018			2017
Service cost	$	502		$	572
Interest cost		696			911
Recognized net actuarial loss		499			648
Amortization of prior service cost		(462	)		(746	)
Net periodic postretirement benefit cost	$	1,235		$	1,385