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Retirement Plans And Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2020

Pension Costs

Defined Benefit Plan Disclosure [Line Items]

Schedule Of Benefit Plans

The components of our consolidated net pension costs are set forth in the following table:

			For the Three Months Ended September 30,												For the Nine Months Ended September 30,
			2020						2019						2020						2019
			(Dollars in thousands)
Service cost			$	623					$	574					$	1,863					$	1,724
Interest cost			1,033						1,316						3,098						3,948
Expected return on plan assets			(1,283)						(1,339)						(3,849)						(4,015)
Net cost			$	373					$	551					$	1,112					$	1,657

Postretirement Costs

Defined Benefit Plan Disclosure [Line Items]

Schedule Of Benefit Plans

The components of our consolidated net postretirement costs are set forth in the following table: 

			For the Three Months Ended September 30,												For the Nine Months Ended September 30,
			2020						2019						2020						2019
			(Dollars in thousands)
Interest cost			$	180					$	236					545						717
Net cost			$	180					$	236					$	545					$	717

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