Pension and postretirement benefits (Table)

3 Months Ended

Mar. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Pension/Postretirement Benefit Cost

		Pension Plans				OPEB Plan
		Quarters ended March 31,				Quarters ended March 31,
(In thousands)		2019		2018		2019		2018
Personnel Cost:
Service cost	$	-	$	-	$	190	$	257
Other operating expenses:
Interest cost		7,110		6,373		1,489		1,390
Expected return on plan assets		(8,096)		(10,060)		-		-
Amortization of prior service cost/(credit)		-		-		-		(867)
Amortization of net loss		5,876		5,065		-		321
Total net periodic pension cost	$	4,890	$	1,378	$	1,679	$	1,101

Schedule of accumulated and projected benefit obligations

	For the quarters ended		For the year ending
(In thousands)	31-Mar-19		31-Dec-19
Pension Plans	$	57	$	229
OPEB Plan	$	1,285	$	8,128