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Employee Benefit Plans (Tables)
9 Months Ended
Sep. 30, 2019
Pension Benefits [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Components of Net Periodic Benefit Cost



 

 

 

 

 

 

 

 

 

 

 



Three Months Ended

 

Nine Months Ended



September 30,

 

September 30,

Pension Benefits

2019

 

2018

 

2019

 

2018

Interest cost

$

466 

 

$

428 

 

$

1,398 

 

$

1,283 

Expected return on plan assets

 

(555)

 

 

(711)

 

 

(1,665)

 

 

(2,133)

Amortization of unrecognized net loss

 

138 

 

 

112 

 

 

412 

 

 

338 



$

49 

 

$

(171)

 

$

145 

 

$

(512)



Postretirement Benefit Plan [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Components of Net Periodic Benefit Cost



 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 



Three Months Ended

 

Nine Months Ended



September 30,

 

September 30,

Postretirement Benefit Plan

2019

 

2018

 

2019

 

2018

Service cost

$

 

$

 

$

15 

 

$

24 

Interest cost

 

46 

 

 

46 

 

 

136 

 

 

138 

Amortization of prior service cost

 

 

 

 

 

11 

 

 

12 

Amortization of unrecognized net (gain) loss

 

(98)

 

 

(70)

 

 

(292)

 

 

(210)



$

(43)

 

$

(12)

 

$

(130)

 

$

(36)