Pension and postretirement benefits (Tables)

3 Months Ended

Mar. 31, 2023

Employee benefits

Components of Net Periodic Pension/Postretirement Benefit Cost

Pension Plans

OPEB Plan

Quarter ended March 31,

Quarter ended March 31,

(In thousands)

2023

2022

2023

2022

Personnel Cost:

 Service cost

$

-

$

-

$

48

$

121

Other operating expenses:

 Interest cost

7,887

4,800

1,520

983

 Expected return on plan assets

(8,591)

(8,847)

-

-

 Amortization of prior service cost/(credit)

-

-

-

-

 Amortization of net loss

5,366

3,911

(553)

-

Total net periodic pension cost 

$

4,662

$

(136)

$

1,015

$

1,104

Schedule of expected benefit payments

For the three months

ended

For the year ending

(In thousands)

March 31, 2023

December 31, 2023

Pension Plans

$

57

$

228

OPEB Plan

$

1,566

$

5,924