Employee Benefit Plans (Summary Of Assets Segregated By Level Of Valuation Inputs Within The Fair Value Hierarchy) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Total	$ 12,351	$ 11,460	$ 14,704
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total	9,549	8,766
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total	2,802	2,694
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Total	62	15
Cash and Cash Equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total	62	15
Cash and Cash Equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Cash and Cash Equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Common stocks
Defined Benefit Plan Disclosure [Line Items]
Total	9,487	8,751
Common stocks | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total	9,487	8,751
Common stocks | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Common stocks | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Total	2,802	2,694
Corporate Bond Securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Corporate Bond Securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Total	2,802	2,694
Corporate Bond Securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Total	$ 0	$ 0