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Components of Net Periodic Benefit Cost (Tables)
9 Months Ended
Sep. 30, 2022
Components of Net Periodic Benefit Cost  
Schedule of Net Periodic Benefit Costs

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Three Months Ended September 30, 

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Nine Months Ended September 30, 

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Post-Retirement

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Post-Retirement

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Pension Benefits

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Health Benefits

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Pension Benefits

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Health Benefits

(Dollar amounts in thousands)

    

2022

    

2021

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2022

    

2021

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2022

    

2021

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2022

    

2021

Service cost

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$

297

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$

339

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$

8

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$

10

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$

892

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$

1,016

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$

25

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$

32

Interest cost

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707

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658

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28

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26

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2,120

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1,974

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83

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77

Expected return on plan assets

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(1,227)

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(1,178)

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—

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—

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(3,682)

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(3,535)

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—

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—

Net amortization of prior service cost

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—

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—

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—

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—

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—

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—

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—

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—

Net amortization of net (gain) loss

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315

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518

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—

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—

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944

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1,554

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—

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Net Periodic Benefit Cost

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$

92

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$

337

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$

36

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$

36

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$

274

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$

1,009

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$

108

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$

109