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Pension And Other Post-Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule Of Components Of Net Periodic Benefit Cost For Pension And Other Post-Retirement Benefit Programs
The components of net periodic benefit cost for the pension and other postretirement benefit programs reflected in the consolidated statements of income are shown below:
Pension BenefitsOther Post-Retirement Benefits
 Three Months Ended March 31,Three Months Ended March 31,
(In thousands)2020201920202019
Service cost$—  $—  $ $ 
Interest cost2,535  3,067  60  73  
Expected return on plan assets(2,804) (3,404) —  —  
Amortization of prior service costs, (gains) losses and net transition asset
3,814  2,729  (47) (58) 
Net periodic benefit cost$3,545  $2,392  $22  $23