Loans and Allowance for Loan Losses (Impaired Loans By Class) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Unpaid Principal Balance
Total	$ 8,115	$ 8,381
Recorded Investment
Total	7,365	7,420
Related Allowance
With no related allowance:	330	300
Average Recorded Investment
Total	7,596	7,685
Interest Income Recognized
Total	132	301
Consumer Installment
Unpaid Principal Balance
Total	20	9
Recorded Investment
Total	19	8
Average Recorded Investment
Total	23	9
Interest Income Recognized
Total	1
Commercial - Non Real Estate
Unpaid Principal Balance
Total	274	364
Recorded Investment
Total	165	228
Average Recorded Investment
Total	197	269
Interest Income Recognized
Total	13	21
Commercial Real Estate
Unpaid Principal Balance
Total	3,176	3,145
Recorded Investment
Total	3,033	3,062
Related Allowance
With no related allowance:	76	149
Average Recorded Investment
Total	3,096	3,098
Interest Income Recognized
Total	38	107
Construction and Farmland
Unpaid Principal Balance
Total	234	488
Recorded Investment
Total	226	433
Related Allowance
With no related allowance:	102	100
Average Recorded Investment
Total	229	450
Interest Income Recognized
Total	2	33
Residential Portfolio Segment
Unpaid Principal Balance
Total	4,411	4,375
Recorded Investment
Total	3,922	3,689
Related Allowance
With no related allowance:	152	51
Average Recorded Investment
Total	4,051	3,859
Interest Income Recognized
Total	78	140
With No Related Allowance
Unpaid Principal Balance
With no related allowance:	4,719	4,946
Recorded Investment
With no related allowance:	3,998	4,034
Average Recorded Investment
With no related allowance:	4,218	4,260
Interest Income Recognized
With no related allowance:	84	152
With No Related Allowance | Commercial - Non Real Estate: - Commercial Real Estate:
Unpaid Principal Balance
With no related allowance:	274	364
Recorded Investment
With no related allowance:	165	228
Average Recorded Investment
With no related allowance:	197	269
Interest Income Recognized
With no related allowance:	13	21
With No Related Allowance | Commercial Real Estate Owner Occupied
Unpaid Principal Balance
With no related allowance:	1,295	369
Recorded Investment
With no related allowance:	1,252	356
Average Recorded Investment
With no related allowance:	1,279	358
Interest Income Recognized
With no related allowance:	18	4
With No Related Allowance | Commercial Real Estate Non-Owner Occupied
Unpaid Principal Balance
With no related allowance:	285	407
Recorded Investment
With no related allowance:	197	329
Average Recorded Investment
With no related allowance:	232	335
With No Related Allowance | Construction And Farmland Commercial
Unpaid Principal Balance
With no related allowance:	47	301
Recorded Investment
With no related allowance:	39	246
Average Recorded Investment
With no related allowance:	42	263
Interest Income Recognized
With no related allowance:	2	25
With No Related Allowance | Consumer Installment
Unpaid Principal Balance
With no related allowance:	20	9
Recorded Investment
With no related allowance:	19	8
Average Recorded Investment
With no related allowance:	23	9
Interest Income Recognized
With no related allowance:	1
With No Related Allowance | Residential Equity Lines
Unpaid Principal Balance
With no related allowance:	273	276
Recorded Investment
With no related allowance:	47	65
Average Recorded Investment
With no related allowance:	49	68
Interest Income Recognized
With no related allowance:		1
With No Related Allowance | Residential Single Family
Unpaid Principal Balance
With no related allowance:	2,525	2,854
Recorded Investment
With no related allowance:	2,279	2,435
Average Recorded Investment
With no related allowance:	2,396	2,583
Interest Income Recognized
With no related allowance:	50	80
With No Related Allowance | Residential Multifamily
Unpaid Principal Balance
With no related allowance:		366
Recorded Investment
With no related allowance:		367
Average Recorded Investment
With no related allowance:		375
Interest Income Recognized
With no related allowance:		21
With An Allowance Recorded
Unpaid Principal Balance
With an allowance recorded:	3,396	3,435
Recorded Investment
With an allowance recorded:	3,367	3,386
Related Allowance
With no related allowance:	330	300
Average Recorded Investment
With an allowance recorded:	3,378	3,425
Interest Income Recognized
With an allowance recorded:	48	149
With An Allowance Recorded | Commercial Real Estate Non-Owner Occupied
Unpaid Principal Balance
With an allowance recorded:	1,596	2,369
Recorded Investment
With an allowance recorded:	1,584	2,377
Related Allowance
With no related allowance:	76	149
Average Recorded Investment
With an allowance recorded:	1,585	2,405
Interest Income Recognized
With an allowance recorded:	20	103
With An Allowance Recorded | Construction And Farmland Commercial
Unpaid Principal Balance
With an allowance recorded:	187	187
Recorded Investment
With an allowance recorded:	187	187
Related Allowance
With no related allowance:	102	100
Average Recorded Investment
With an allowance recorded:	187	187
Interest Income Recognized
With an allowance recorded:		8
With An Allowance Recorded | Residential Single Family
Unpaid Principal Balance
With an allowance recorded:	1,613	879
Recorded Investment
With an allowance recorded:	1,596	822
Related Allowance
With no related allowance:	152	51
Average Recorded Investment
With an allowance recorded:	1,606	833
Interest Income Recognized
With an allowance recorded:	$ 28	$ 38