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Employee Benefit Plans (Tables)
3 Months Ended
Mar. 31, 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



March 31,

Pension Benefits

2019

 

2018

Interest cost

$

466 

 

$

427 

Expected return on plan assets

 

(555)

 

 

(711)

Amortization of unrecognized net loss

 

137 

 

 

113 



$

48 

 

$

(171)



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



March 31,

Postretirement Benefit Plan

2019

 

2018

Service cost

$

 

$

Interest cost

 

45 

 

 

45 

Amortization of prior service cost

 

 

 

Amortization of unrecognized net (gain) loss

 

(97)

 

 

(70)



$

(43)

 

$

(13)