Fair Value Measurements And Fair Values Of Financial Instruments (Schedule Of Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		$ 4,880	$ 5,474	[1]
Level 3 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		4,880	5,474	[1]
Impaired Loans [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	[1]	4,880	5,474
Impaired Loans [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		4,880	5,474
Impaired Loans [Member] | Level 3 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	[1]	$ 4,880	$ 5,474

[1] Includes assets directly charged down to fair value during the year-to-date period or those for which a specific reserve has been established.