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Pension Plans and Other Postretirement Benefits
 3 Months Ended
Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Pension Plans and Other Postretirement Benefits
Pension Plans and Other Postretirement Benefits
 
The following table sets 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 March 31,
 
For the Three Months Ended March 31,
(In Thousands)
 
2015
 
 
 
2014
 
 
 
2015
 
 
 
2014
 
Service cost
 
$
—

 
 
 
$
—

 
 
 
$
469

 
 
 
$
219

 
Interest cost
 
2,510

 
 
 
2,633

 
 
 
276

 
 
 
222

 
Expected return on plan assets
 
(3,633
)
 
 
 
(3,713
)
 
 
 
—

 
 
 
—

 
Recognized net actuarial loss (gain)
 
757

 
 
 
359

 
 
 
—

 
 
 
(151
)
 
Amortization of prior service cost
 
47

 
 
 
47

 
 
 
—

 
 
 
—

 
Net periodic (benefit) cost
 
$
(319
)
 
 
 
$
(674
)
 
 
 
$
745

 
 
 
$
290