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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Table)
 6 Months Ended
Jun. 30, 2019
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, 2019 and 2018 were as follows:

 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
(In thousands)
2019
 
2018
 
2019
 
2018
Service cost
$
5,825

 
$
6,495

 
$
11,651

 
$
13,001

Interest cost
7,371

 
6,521

 
14,743

 
13,055

Expected return on plan assets
(14,882
)
 
(14,695
)
 
(29,766
)
 
(29,411
)
Amortization of prior service cost
(70
)
 
(62
)
 
(141
)
 
(125
)
Amortization of unrecognized actuarial loss
2,592

 
3,903

 
5,184

 
7,809

Net periodic pension cost
$
836


$
2,162


$
1,671


$
4,329