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Pension And Other Post-Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2018
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 post-retirement benefit programs reflected in the consolidated statements of income are shown below:
 
Pension Benefits
 
Other Post-Retirement Benefits
 
Three Months Ended March 31,
 
Three Months Ended March 31,
(In thousands)
2018
 
2017
 
2018
 
2017
Service cost
$
5

 
$
58

 
$
10

 
$
9

Interest cost
2,882

 
3,164

 
69

 
76

Expected return on plan assets
(3,761
)
 
(3,736
)
 

 

Amortization of prior service costs, (gains) losses and net transition asset
3,428

 
3,123

 
(54
)
 
(61
)
Net periodic benefit cost
$
2,554

 
$
2,609

 
$
25

 
$
24