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Pension Plans and Other Postretirement Benefits
9 Months Ended
Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Pension Plans and Other Postretirement Benefits
Pension Plans and Other Postretirement Benefits

The following tables set forth information regarding the components of net periodic (benefit) cost for our defined benefit pension plans and other postretirement benefit plan for the periods indicated.
 
 
Pension Benefits
 
 
 
Other Postretirement
Benefits
 
 
For the Three Months Ended September 30,
 
For the Three Months Ended September 30,
(In Thousands)
 
2015
 
 
 
2014
 
 
 
2015
 
 
 
2014
 
Service cost
 
$

 
 
 
$

 
 
 
$
532

 
 
 
$
309

 
Interest cost
 
2,482

 
 
 
2,613

 
 
 
251

 
 
 
233

 
Expected return on plan assets
 
(3,634
)
 
 
 
(3,710
)
 
 
 

 
 
 

 
Recognized net actuarial loss (gain)
 
743

 
 
 
350

 
 
 

 
 
 
(122
)
 
Amortization of prior service cost
 
48

 
 
 
47

 
 
 

 
 
 

 
Net periodic (benefit) cost
 
$
(361
)
 
 
 
$
(700
)
 
 
 
$
783

 
 
 
$
420

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pension Benefits
 
 
 
Other Postretirement
Benefits
 
 
For the Nine Months Ended September 30,
 
For the Nine Months Ended September 30,
(In Thousands)
 
2015
 
 
 
2014
 
 
 
2015
 
 
 
2014
 
Service cost
 
$

 
 
 
$

 
 
 
$
1,597

 
 
 
$
930

 
Interest cost
 
7,447

 
 
 
7,838

 
 
 
753

 
 
 
698

 
Expected return on plan assets
 
(10,901
)
 
 
 
(11,132
)
 
 
 

 
 
 

 
Recognized net actuarial loss (gain)
 
2,229

 
 
 
1,051

 
 
 

 
 
 
(366
)
 
Amortization of prior service cost
 
143

 
 
 
142

 
 
 

 
 
 

 
Net periodic (benefit) cost
 
$
(1,082
)
 
 
 
$
(2,101
)
 
 
 
$
2,350

 
 
 
$
1,262