Pension and postretirement benefits (Tables)

3 Months Ended

Mar. 31, 2021

Employee benefits

Components of Net Periodic Pension/Postretirement Benefit Cost

		Pension Plans				OPEB Plan
		Quarters ended March 31,				Quarters ended March 31,
(In thousands)		2021		2020		2021		2020
Personnel Cost:
Service cost	$	-	$	-	$	159	$	178
Other operating expenses:
Interest cost		3,998		5,847		893		1,228
Expected return on plan assets		(9,670)		(9,526)		-		-
Amortization of prior service cost/(credit)		-		-		-		-
Amortization of net loss		4,720		5,220		470		142
Total net periodic pension cost	$	(952)	$	1,541	$	1,522	$	1,548

Schedule of expected benefit payments

	For the quarter ended		For the year ending
(In thousands)	March 31, 2021		December 31, 2021
Pension Plans	$	57	$	229
OPEB Plan	$	1,567	$	6,333