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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Table)
 6 Months Ended
Jun. 30, 2015
Pension Plans Defined Benefit [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule Of Defined Benefit Plans Disclosures
The components of net periodic pension cost for the three and six months ended June 30, 2015 and 2014 are as follows:

 
Three Months Ended
 
Six Months Ended
(In thousands)
June 30,
 
June 30,
 
2015
 
2014
 
2015
 
2014
Service cost
$
7,137

 
$
6,372

 
$
14,273

 
$
12,742

Interest cost
7,497

 
7,552

 
14,988

 
15,096

Expected return on plan assets
(13,688
)
 
(10,425
)
 
(27,367
)
 
(20,838
)
Amortization of prior service cost
156

 
157

 
311

 
315

Amortization of unrecognized actuarial loss
3,866

 
1,483

 
7,731

 
2,966

Net periodic benefit cost
$
4,968

 
$
5,139

 
$
9,936

 
$
10,281