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Pension Plans And Other Postretirement Benefits (Tables)
9 Months Ended
Sep. 30, 2022
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,

2022

2021

2022

2021

Service cost

$

707

$

775

$

2,121

$

2,728

Interest cost

3,202

3,351

9,605

9,667

Expected return on plan assets

(5,895)

(5,733)

(17,684)

(17,432)

Amortization of prior service cost

134

140

402

419

Amortization of actuarial loss

435

555

1,306

2,352

Net periodic benefit cost (credit)

$

(1,417)

$

(912)

$

(4,250)

$

(2,266)

Other

Postretirement Benefits

Three Months Ended

Nine Months Ended

September 30,

September 30,

2022

2021

2022

2021

Service cost

$

478

$

698

$

1,433

$

2,094

Interest cost

842

840

2,527

2,520

Expected return on plan assets

(1,142)

(1,039)

(3,376)

(3,117)

Amortization of prior service credit

-

(108)

-

(324)

Amortization of actuarial (gain) loss

(334)

55

(1,002)

165

Net periodic benefit (credit) cost

$

(156)

$

446

$

(418)

$

1,338