Pension and postretirement benefits (Tables)

9 Months Ended

Sep. 30, 2021

Employee benefits

Components of Net Periodic Pension/Postretirement Benefit Cost

		Pension Plans				OPEB Plan
		Quarters ended September 30,				Quarters ended September 30,
(In thousands)		2021		2020		2021		2020
Personnel Cost:
Service cost	$	-	$	-	$	160	$	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		4,719		5,220		468		142
Total net periodic pension cost	$	(953)	$	1,541	$	1,521	$	1,548

		Pension Plans				OPEB Plan
		Nine months ended September 30,				Nine months ended September 30,
(In thousands)		2021		2020		2021		2020
Personnel Cost:
Service cost	$	-	$	-	$	480	$	535
Other operating expenses:
Interest cost		11,994		17,541		2,679		3,684
Expected return on plan assets		(29,011)		(28,577)		-		-
Amortization prior service cost/(credit)		-		-		-		-
Amortization of net loss		14,159		15,660		1,407		426
Total net periodic pension cost	$	(2,858)	$	4,624	$	4,566	$	4,645

Schedule of expected benefit payments

	For the nine months ended		For the year ending
(In thousands)	September 30, 2021		December 31, 2021
Pension Plans	$	172	$	229
OPEB Plan	$	4,640	$	6,333