Employee Benefit Plans (Summary Of Activity Within The Defined Benefit Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in fair value of plan assets:
Fair value at beginning of measurement period	$ 11,884	$ 12,041
Actual gain (loss) on plan assets	1,324	880
Contributions by employer	450	0
Defined Benefit Plan, Plan Assets, Benefits Paid	1,029	1,037
Fair value at End of measurement period	12,629	11,884	$ 12,041
Change in benefit obligation:
Benefit obligation at beginning of measurement period	(15,219)	(14,222)
Interest cost	(448)	(561)	(590)
Actuarial loss	83	(21)
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change	(944)	(1,452)
Benefits paid	(1,029)	(1,037)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement	0	0
Benefit obligation at end of measurement period	(15,499)	(15,219)	$ (14,222)
Funded status	(2,870)	(3,335)
Other comprehensive loss	$ (5,661)	$ (6,270)
Weighted-average assumptions for benefit cost at beginning of year, Discount rate	2.21%	3.05%
Weighted-average assumptions for balance sheet liability at end of year, Expected long-term rate of return	6.75%	6.75%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.05%	4.10%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	6.75%	6.75%