Employee Benefits And Deferred Compensation Plans (Schedule Of Defined Benefit Plans Disclosures, SERP) (Details) - Supplemental Executive Retirement Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Change in benefit obligation:
Benefit obligation at the beginning of the year	$ 5,048	$ 5,754
Service cost	144	131	$ 148
Interest cost	250	124	100
Actuarial gain	(188)	(553)
Benefits paid	(285)	(408)
Benefit obligation at the end of the year	4,969	5,048	$ 5,754
Change in plan assets:
Employer contributions	285	408
Benefits paid	(285)	(408)
Funded status	(4,969)	(5,048)
Accrued benefit liabilities	(4,969)	(5,048)
Net actuarial loss	188	376
Net amount recognized in equity – pre-tax	188	376
Accumulated benefit obligation at year end	$ 4,842	$ 4,922