Loans (Allowance for Credit Losses on Financing Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Allowance for loan losses:
Beginning Balance	$ 10,942	$ 10,976
Charge-offs	(2,358)	(2,375)
Recoveries	140	211
Provisions	10,700	2,130
Ending Balance	19,424	10,942
Commercial real estate
Allowance for loan losses:
Beginning Balance	7,398	6,882
Charge-offs	(944)	(148)
Recoveries	17	15
Provisions	7,273	649
Ending Balance	13,744	7,398
Residential first mortgages
Allowance for loan losses:
Beginning Balance	464	755
Charge-offs	0	0
Recoveries	0	0
Provisions	841	(291)
Ending Balance	1,305	464
Residential rentals
Allowance for loan losses:
Beginning Balance	397	498
Charge-offs	0	(53)
Recoveries	0	46
Provisions	1,016	(94)
Ending Balance	1,413	397
Construction and land development
Allowance for loan losses:
Beginning Balance	273	310
Charge-offs	0	(329)
Recoveries	0	0
Provisions	128	292
Ending Balance	401	273
Home equity and second mortgages
Allowance for loan losses:
Beginning Balance	149	133
Charge-offs	(53)	(28)
Recoveries	9	6
Provisions	156	38
Ending Balance	261	149
Commercial loans
Allowance for loan losses:
Beginning Balance	1,086	1,482
Charge-offs	(1,027)	(1,127)
Recoveries	20	40
Provisions	1,143	691
Ending Balance	1,222	1,086
Consumer loans
Allowance for loan losses:
Beginning Balance	10	6
Charge-offs	(6)	(5)
Recoveries	0	2
Provisions	16	7
Ending Balance	20	10
Commercial equipment
Allowance for loan losses:
Beginning Balance	1,165	910
Charge-offs	(328)	(685)
Recoveries	94	102
Provisions	127	838
Ending Balance	1,058	1,165
PCI Loans
Allowance for loan losses:
Beginning Balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provisions	0	0
Ending Balance	$ 0	$ 0