Pensions and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2017

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Plan Cost

The composition of the net periodic benefit plan cost for the six months ended June 30, 2017 and 2016, was as follows:

	Pension plans				Other postretirement benefits
(in thousands)	2017		2016		2017		2016
Components of net periodic benefit cost:
Service cost	$1,307		$1,319		$122		$127
Interest cost	3,671		4,049		1,107		1,221
Expected return on assets	(4,003	)	(4,482	)	-		-
Amortization of prior service cost/(credit)	18		19		(2,244	)	(2,244	)
Amortization of net actuarial loss	1,295		1,164		1,405		1,410
Net periodic benefit cost	$2,288		$2,069		$390		$514