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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Table)
 3 Months Ended
Mar. 31, 2018
Retirement Benefits, Description [Abstract]  
Schedule Of Defined Benefit Plans Disclosures
The components of net periodic pension cost for the three months ended March 31, 2018 and 2017 are as follows:

 
 
Three Months Ended
 
 
March 31,
(In thousands)
 
2018
 
2017
Service cost
 
$
6,506

 
$
6,471

Interest cost
 
6,534

 
6,219

Expected return on plan assets
 
(14,716
)
 
(13,285
)
Amortization of prior service cost
 
(63
)
 
(25
)
Amortization of unrecognized actuarial loss
 
3,906

 
3,581

Net periodic benefit cost
 
$
2,167

 
$
2,961