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Benefit Plans (Tables)

6 Months Ended

Jun. 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 June 30,																		For the Six Months Ended June 30,
			2020						2019						2020						2019
			(Dollars in thousands)
Service cost			$	618					$	575					$	1,240					$	1,150
Interest cost			1,032						1,316						2,065						2,632
Expected return on plan assets			(1,282)						(1,338)						(2,566)						(2,676)
Net cost			$	368					$	553					$	739					$	1,106

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 June 30,																		For the Six Months Ended June 30,
			2020						2019						2020						2019
			(Dollars in thousands)
Interest cost			$	174					$	239					365						481
Net cost			$	174					$	239					$	365					$	481

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