Pension and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2017

Pension and Other Postretirement Benefits

Schedule of Components of net periodic benefit cost

	Pension Benefits				Postretirement Benefits
	Three months ended June 30,
(in thousands)	2017		2016		2017		2016
Components of net periodic benefit cost
Service cost	$	2,184	$	2,456	$	243	$	250
Interest cost		2,934		3,122		183		212
Expected return on plan assets		(2,934)		(3,067)		-		-
Settlement expense		185		-		-		-
Amortization of net (gain) loss		258		122		(135)		(174)
Amortization of prior service cost (credit)		43		43		(27)		(42)
Net periodic benefit cost	$	2,670	$	2,676	$	264	$	246

	Pension Benefits				Postretirement Benefits
	Six months ended June 30,
(in thousands)	2017		2016		2017		2016
Components of net periodic benefit cost
Service cost	$	4,521	$	4,909	$	478	$	500
Interest cost		5,952		6,293		357		423
Expected return on plan assets		(5,947)		(6,206)		-		-
Settlement expense		316		-		-		-
Amortization of net (gain) loss		297		247		(301)		(348)
Amortization of prior service cost (credit)		87		87		(68)		(84)
Net periodic benefit cost	$	5,226	$	5,330	$	466	$	491