Loans (Troubled Debt Restructurings on Financing Receivables) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Dollars
Total TDRs | $	$ 2,094	$ 2,049
Less: TDRs included in non-accrual loans | $	(1,522)	(1,399)
Accrual TDR loans | $	$ 572	$ 650
Number of Loans
Total TDRs | loan	6	8
Less: TDRs included in non-accrual loans | loan	(3)	(3)
Total performing accrual TDR loans | loan	3	5
Commercial real estate
Dollars
Total TDRs | $	$ 1,376	$ 1,420
Number of Loans
Total TDRs | loan	2	3
Residential first mortgages
Dollars
Total TDRs | $	$ 247	$ 64
Number of Loans
Total TDRs | loan	2	1
Commercial equipment
Dollars
Total TDRs | $	$ 471	$ 565
Number of Loans
Total TDRs | loan	2	4