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Pension and Other Postretirement Benefits (Tables)
 3 Months Ended
Mar. 31, 2017
Pension and Other Postretirement Benefits  
Schedule of Components of net periodic benefit cost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pension Benefits

 

Postretirement Benefits

 

 

 

Three months ended March 31, 

 

(in thousands)

    

2017

    

2016

    

2017

    

2016

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Components of net periodic benefit cost

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$
2,337

 

$
2,453

 

$
235

 

$
250

 

Interest cost

 

 
3,018

 

 
3,171

 

 
174

 

 
211

 

Expected return on plan assets

 

 
(3,013)

 

 
(3,139)

 

 

-

 

 

-

 

Settlement expense

 

 
131

 

 

-

 

 

-

 

 

-

 

Amortization of net (gain) loss

 

 
39

 

 
125

 

 
(166)

 

 
(174)

 

Amortization of prior service cost (credit)

 

 
44

 

 
44

 

 
(41)

 

 
(42)

 

Net periodic benefit cost

 

$
2,556

 

$
2,654

 

$
202

 

$
245