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Pension And Other Post-Retirement Benefits (Tables)
 9 Months Ended
Sep. 30, 2017
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 consolidated results are shown below:
 
Pension Benefits
 
Other Post-Retirement Benefits
 
Three Months Ended September 30,
 
Three Months Ended September 30,
(In Thousands)
2017
 
2016
 
2017
 
2016
Service cost
$
29

 
$
54

 
$
7

 
$
8

Interest cost
3,103

 
3,263

 
73

 
67

Expected return on plan assets
(3,743
)
 
(4,070
)
 
—

 
—

Amortization of prior service costs, gains or losses and net transition asset
2,996

 
3,135

 
(84
)
 
(49
)
Net periodic benefit cost
$
2,385

 
$
2,382

 
$
(4
)
 
$
26

 
Pension Benefits
 
Other Post-Retirement Benefits
 
Nine Months Ended September 30,
 
Nine Months Ended September 30,
 
2017
 
2016
 
2017
 
2016
Service cost
$
145

 
$
178

 
$
25

 
$
29

Interest cost
9,431

 
9,993

 
226

 
236

Expected return on plan assets
(11,216
)
 
(12,027
)
 
—

 
—

Amortization of prior service costs, (gains) losses and net transition asset
9,241

 
9,903

 
(207
)
 
(144
)
Net periodic benefit cost
$
7,601

 
$
8,047

 
$
44

 
$
121