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Pension (Schedule Of Net Periodic Pension Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pension [Abstract]
Service cost	$ 83	$ 82	$ 249	$ 243
Interest cost	131	157	394	473
Expected return on plan assets	(269)	(272)	(809)	(814)
Recognized net actuarial loss	226	133	678	419
Total pension expense	$ 171	$ 100	$ 512	$ 321

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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