Loans and Allowance For Credit Losses (Schedule of Defaults During Stated Period of Trouble Debt Restructurings) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) contract	Dec. 31, 2019 USD ($) contract
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	3	5
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 808	$ 352
Commercial real estate owner occupied other
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 361	$ 0
Commercial real estate non-owner occupied retail
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 0	$ 52
Commercial real estate non-owner occupied other
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 0	$ 126
Residential 1-4 family real estate personal residence
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	1	2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 48	$ 122
Residential 1-4 family real estate rental - small loan
Financing Receivable, Impaired [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract	1	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | $	$ 399	$ 52