Loans And Allowance For Credit Losses (Collateral-Dependent Loans) (Details) - Commercial Portfolio Segment [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Collateral Dependent Loans, Amortized Cost	$ 4,602	$ 4,063
Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Collateral Dependent Loans, Business, Amortized Cost	4,602	4,063
Business Assets [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Collateral Dependent Loans, Amortized Cost	2,778	1,604
Business Assets [Member] | Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Collateral Dependent Loans, Business, Amortized Cost	2,778	1,604
Oil & Gas Assets [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Collateral Dependent Loans, Amortized Cost	1,824	2,459
Oil & Gas Assets [Member] | Business [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Collateral Dependent Loans, Business, Amortized Cost	$ 1,824	$ 2,459