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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Table)
3 Months Ended
Mar. 31, 2021
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 months ended March 31, 2021 and 2020 were as follows:

Three Months Ended
March 31,
(In thousands)20212020
Service cost$6,870 $6,611 
Interest cost4,306 6,058 
Expected return on plan assets(15,180)(16,896)
Amortization of prior service cost(63)(71)
Amortization of unrecognized actuarial loss7,143 5,749 
Net periodic pension cost$3,076 $1,451