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Pension Plans And Other Postretirement Benefits (Tables)
9 Months Ended
Sep. 30, 2024
Pension Plans And Other Postretirement Benefits [Abstract]  
Components Of Net Periodic Benefit Costs

Pension Benefits

Three Months Ended

Nine Months Ended

September 30,

September 30,

2024

2023

2024

2023

Service cost

$

358

$

400

$

1,072

$

1,201

Interest cost

3,908

4,309

11,724

12,926

Expected return on plan assets

(4,696)

(5,673)

(14,088)

(17,018)

Amortization of prior service cost

82

171

244

513

Amortization of actuarial loss

751

810

2,253

2,428

Net periodic benefit cost

$

403

$

17

$

1,205

$

50

Other

Postretirement Benefits

Three Months Ended

Nine Months Ended

September 30,

September 30,

2024

2023

2024

2023

Service cost

$

363

$

337

$

1,089

$

1,011

Interest cost

1,113

1,119

3,337

3,357

Expected return on plan assets

(1,105)

(1,093)

(3,315)

(3,279)

Amortization of actuarial gain

(267)

(329)

(801)

(988)

Net periodic benefit cost

$

104

$

34

$

310

$

101