Three Months Ended

Six Months Ended

June 30,

June 30,

(In thousands)

2023

2022

2023

2022

Pension Benefits

Components of net periodic benefit cost:

Service cost

$

694

$

1,195

$

1,446

$

2,532

Interest cost

4,337

2,784

8,659

5,580

Expected return on assets

(6,302

)

(7,844

)

(12,624

)

(15,695

)

Amortization of:

Prior service credit

—

(5

)

—

(10

)

Actuarial loss

492

484

880

1,208

Net periodic benefit (credit) cost

$

(779

)

$

(3,386

)

$

(1,639

)

$

(6,385

)

Postretirement Benefits

Components of net periodic benefit cost:

Service cost

$

190

$

314

$

390

$

647

Interest cost

835

479

1,654

970

Expected return on assets

(646

)

(839

)

(1,297

)

(1,682

)

Amortization of:

Transition obligation

—

—

1

1

Prior service credit

—

(75

)

—

(149

)

Actuarial (gain) loss

(65

)

24

(95

)

72

Net periodic benefit (credit) cost

$

314

$

(97

)

$

653

$

(141

)