Pensions and Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Plan Cost

The composition of the net periodic benefit plan cost for the six months ended June 30, 2016 and 2015 was as follows:

	Pension plans				Other postretirement benefits
(in thousands)	2016		2015		2016		2015
Components of net periodic benefit cost:
Service cost	$1,319		$1,529		$127		$166
Interest cost	4,049		3,895		1,221		1,220
Expected return on assets	(4,482	)	(4,326	)	-		-
Amortization of prior service cost/(credit)	19		24		(2,244	)	(2,244	)
Amortization of net actuarial loss	1,164		1,297		1,410		1,669
Net periodic benefit cost	$2,069		$2,419		$514		$811