Loans And Allowance for Credit Losses (Collateral-Dependent Loans) (Details) - Commercial Portfolio Segment [Member] - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Credit Quality Indicator [Line Items]
Total	$ 4,282	$ 4,602
Business
Credit Quality Indicator [Line Items]
Business	4,282	4,602
Business Assets
Credit Quality Indicator [Line Items]
Total	2,611	2,778
Business Assets | Business
Credit Quality Indicator [Line Items]
Business	2,611	2,778
Oil & Gas Assets
Credit Quality Indicator [Line Items]
Total	1,671	1,824
Oil & Gas Assets | Business
Credit Quality Indicator [Line Items]
Business	$ 1,671	$ 1,824