Loans and Allowance For Credit Losses (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Days Past Due When Loans are Placed on Nonaccrual Status	90 days
Troubled debt restructurings included in impaired loans	$ 20,900	$ 24,500
Current Troubled debt restructurings included in impaired loans	18,700	20,500
Commitments to Lend Funds for Restructured Loans	0
Financing Receivable, Troubled Debt Restructuring, Individually Evaluated for Impairment, Minimum	$ 500
Threshold Period Past Due for Loans to be Default	30 days
Loan review aggregate exposure amount on non-homogenous commercial loan relationships	$ 5,000
Loans Collectively Evaluated Fully Guaranteed or Cash Secured Loans	19,800	83,900
Accrued Interest Receivable and Fees on Loans	7,200	9,100
Concentrations of Loans to Any Single Industry in Excess of 10% of Total Loans	0	$ 0
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family rental small loan / large loan classification	600
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family rental small loan / large loan classification	$ 600