Benefit Plans (Tables)

9 Months Ended

Oct. 01, 2017

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Pension Cost

The components of net periodic pension cost were as follows:

	Third Quarter						First Three Quarters
(in thousands)	2017			2016			2017			2016
Service cost	$	150		$	28		$	450		$	85
Interest cost		2,978			3,031			8,936			9,093
Expected return on plan assets		(3,399	)		(3,458	)		(10,197	)		(10,373	)
Recognized net actuarial loss		807			741			2,421			2,222
Amortization of prior service cost		7			7			21			21
Net periodic pension cost	$	543		$	349		$	1,631		$	1,048

Components of Net Periodic Postretirement Benefit Cost

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

	Third Quarter						First Three Quarters
(in thousands)	2017			2016			2017			2016
Service cost	$	572		$	350		$	1,716		$	1,050
Interest cost		910			778			2,732			2,333
Recognized net actuarial loss		648			587			1,944			1,762
Amortization of prior service cost		(745	)		(840	)		(2,237	)		(2,520	)
Net periodic postretirement benefit cost	$	1,385		$	875		$	4,155		$	2,625