﻿

Other Post-

(in thousands)

Pension Benefits

Retirement Benefits

For the Three Months Ended June 30,

2022

2021

2022

2021

Service cost

$

2,929

$

2,926

$

25

$

21

Interest cost

3,708

2,970

76

67

Expected return on plan assets

(11,711

)

(11,333

)

—

—

Amortization of net (gain) or loss and prior service costs

582

1,654

(139

)

(163

)

Special termination benefits

—

16,052

—

4,137

Net periodic benefit cost

$

(4,492

)

$

12,269

$

(38

)

$

4,062

(in thousands)

Pension Benefits

Retirement Benefits

For the Six Months Ended June 30,

2022

2021

2022

2021

Service cost

$

5,729

$

6,376

$

50

$

48

Interest cost

7,125

6,430

153

166

Expected return on plan assets

(23,186

)

(23,391

)

—

—

Amortization of net (gain) or loss and prior service costs

1,930

3,754

(278

)

(309

)

Special termination benefits

—

16,052

—

4,137

Net periodic benefit cost

$

(8,402

)

$

9,221

$

(75

)

$

4,042