Pension and postretirement benefits (Tables)

6 Months Ended

Jun. 30, 2023

Employee benefits

Components of Net Periodic Pension/Postretirement Benefit Cost

Pension Plans

OPEB Plan

Quarter ended June 30,

Quarter ended June 30,

(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

Pension Plans

OPEB Plan

Six months ended June 30,

Six months ended June 30,

(In thousands)

2023

2022

2023

2022

Personnel Cost:

 Service cost

$

-

$

-

$

95

$

242

Other operating expenses:

 Interest cost

15,774

9,600

3,041

1,966

 Expected return on plan assets

(17,183)

(17,694)

-

-

 Amortization prior service cost/(credit)

-

-

-

-

 Amortization of net loss

10,732

7,822

(1,106)

-

Total net periodic pension cost

$

9,323

$

(272)

$

2,030

$

2,208

Schedule of expected benefit payments

For the six months ended

For the year ending

(In thousands)

June 30, 2023

December 31, 2023

Pension Plans

$

114

$

228

OPEB Plan

$

3,258

$

5,924