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PENSION AND POSTRETIREMENT PLANS (Tables)
9 Months Ended
Sep. 30, 2020
PENSION AND OTHER POSTRETIREMENT PLANS.  
Schedule of components of net periodic benefit cost (credit)

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Three Months Ended September 30, 

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Nine Months Ended September 30, 

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Pension Benefits

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SERP Benefits

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Pension Benefits

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SERP Benefits

(In thousands)

    

2020

    

2019

    

2020

    

2019

    

2020

    

2019

    

2020

    

2019

Components of net periodic benefit (credit) cost and other amounts recognized in other comprehensive income:

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Service cost

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$

265

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$

273

  

$

92

  

$

65

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$

795

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$

818

  

$

278

  

$

196

Interest cost

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193

  

 

225

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38

  

 

37

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578

  

 

675

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112

  

 

110

Expected return on plan assets

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(713)

  

 

(608)

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—

  

 

—

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(2,138)

  

 

(1,823)

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—

  

 

—

Amortization of net loss

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100

  

 

130

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56

  

 

18

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300

  

 

390

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170

  

 

53

Amortization of prior service credit

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(20)

  

 

(20)

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—

  

 

—

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(58)

  

 

(58)

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—

  

 

—

Net periodic benefit (credit) cost

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$

(175)

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$

—

  

$

186

  

$

120

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$

(523)

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$

2

  

$

560

  

$

359