Loans (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) contract loan	Sep. 30, 2020 contract	Sep. 30, 2021 USD ($) contract loan	Sep. 30, 2020 contract	Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan review aggregate exposure amount on non-homogenous commercial loan relationships	$ 5,000		$ 5,000
Troubled debt restructurings included in impaired loans	21,700		21,700		$ 24,500
Commitments to Lend Funds for Restructured Loans	0		0
Financing Receivable, Troubled Debt Restructuring, Individually Evaluated for Impairment, Minimum	$ 500		$ 500
Number of days past due to be considered in default			30 days
Document Period End Date			Sep. 30, 2021
Financing Receivable, Modifications, Number of Contracts | contract	0	2	0	3
Loans Collectively Evaluated Fully Guaranteed or Cash Secured Loans	$ 30,900		$ 30,900		83,900
Accrued Interest and Fees Receivable on Loans	$ 6,100		$ 6,100		9,100
Number of Days Loan Customer May Apply for a Deferral of Payments Due to COVID-19			90 days
Number of Loans in COVID-19 Deferment | loan	1		1
Outstanding Balance of COVID-19 Loans in Deferment	$ 7,200		$ 7,200
Current Troubled Debt Restructurings	$ 19,400		$ 19,400		$ 20,500