Fair Value Measurements (Financial And Nonfinancial Assets Measured At Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Nonfinancial Assets:
Other real estate owned, net of allowance	$ 442	$ 183
Nonrecurring [Member] | Financial Assets [Member]
Financial Assets:
Impaired loans	3,031	3,075
Nonrecurring [Member] | Nonfinancial Assets [Member]
Nonfinancial Assets:
Other real estate owned, net of allowance	442	183
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Financial Assets [Member]
Financial Assets:
Impaired loans	3,031	3,075
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Nonfinancial Assets [Member]
Nonfinancial Assets:
Other real estate owned, net of allowance	$ 442	$ 183