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Employee Benefit Plans (Tables)
 3 Months Ended
Mar. 31, 2017
Compensation And Retirement Disclosure [Abstract]  
Components of Net Periodic Benefit Cost (Credit)

The following table summarizes the components of net periodic benefit cost (credit) related to the Company’s post-retirement plans for the three month periods ended March 31, 2017 and 2016:

 

 

 

Pension Plans

 

 

Medical Plan

 

 

 

Three Months Ended March 31,

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

Components of Net Periodic Benefit Cost (Credit):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service cost

 

$

340

 

 

$

307

 

 

$

-

 

 

$

4

 

Interest cost

 

 

3,981

 

 

 

5,213

 

 

 

-

 

 

 

45

 

Expected return on plan assets

 

 

(6,105

)

 

 

(7,166

)

 

 

-

 

 

 

-

 

Amortization of:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Prior service cost

 

 

30

 

 

 

590

 

 

 

-

 

 

 

-

 

Net actuarial loss (gain)

 

 

1,332

 

 

 

989

 

 

 

-

 

 

 

-

 

Net periodic benefit cost (credit)

 

$

(422

)

 

$

(67

)

 

$

-

 

 

$

49