Pensions and Other Postretirement Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2017

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Plan Cost

The composition of the net periodic benefit plan cost for the nine months ended September 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	$1,960		$1,991		$183		$190
Interest cost	5,507		6,110		1,660		1,832
Expected return on assets	(6,004	)	(6,763	)	-		-
Curtailment gain	-		(130	)	-		-
Amortization of prior service cost/(credit)	27		28		(3,366	)	(3,366	)
Amortization of net actuarial loss	1,943		1,756		2,107		2,114
Net periodic benefit cost	$3,433		$2,992		$584		$770