Pension and postretirement benefits (Tables)

9 Months Ended

Sep. 30, 2023

Employee benefits

Components of Net Periodic Pension/Postretirement Benefit Cost

Pension Plans

OPEB Plan

Quarter ended September 30,

Quarter ended September 30,

(In thousands)

2023

2022

2023

2022

Personnel Cost:

 Service cost

$

-

$

-

$

48

$

121

Other operating expenses:

 Interest cost

7,886

4,800

1,520

983

 Expected return on plan assets

(8,591)

(8,847)

-

-

 Amortization of prior service cost/(credit)

-

-

-

-

 Amortization of net loss

5,367

3,911

(553)

-

Total net periodic pension cost 

$

4,662

$

(136)

$

1,015

$

1,104

Pension Plans

OPEB Plan

Nine months ended September 30,

Nine months ended September 30,

(In thousands)

2023

2022

2023

2022

Personnel Cost:

 Service cost

$

-

$

-

$

143

$

364

Other operating expenses:

 Interest cost

23,661

14,399

4,561

2,948

 Expected return on plan assets

(25,774)

(26,541)

-

-

 Amortization prior service cost/(credit)

-

-

-

-

 Amortization of net loss

16,099

11,733

(1,659)

-

Total net periodic pension cost

$

13,986

$

(409)

$

3,045

$

3,312

Schedule of expected benefit payments

For the nine months ended

For the year ending

(In thousands)

September 30, 2023

December 31, 2023

Pension Plans

$

171

$

228

OPEB Plan

$

4,896

$

5,924