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Employee Benefit Plans (Tables)
9 Months Ended
Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]  
Components of Net Periodic Benefit (Income) Cost for the Pension Plans

Net periodic benefit (income) cost for the pension plans included the following components for the three months ended September 30:

 

     Pension Benefits  
     2014     2013  
     (in thousands)  

Service cost

   $ 1,910      $ 4,798   

Interest cost

     25,760        22,219   

Expected return on plan assets

     (36,208     (33,414

Amortization of prior service credit

     (468     (1,884

Amortization of actuarial loss

     6,745        20,535   
  

 

 

   

 

 

 

Net periodic benefit (income) cost

   $ (2,261   $ 12,254   
  

 

 

   

 

 

 

Net periodic benefit (income) cost for the pension plans included the following components for the nine months ended September 30:

 

     Pension Benefits  
     2014     2013  
     (in thousands)  

Service cost

   $ 5,746      $ 14,735   

Interest cost

     76,792        67,017   

Expected return on plan assets

     (108,639     (100,427

Amortization of prior service credit

     (1,400     (5,670

Amortization of actuarial loss

     19,953        62,744   
  

 

 

   

 

 

 

Net periodic benefit (income) cost

   $ (7,548   $ 38,399