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Loans and Allowance for Loan Losses (Impaired Loans By Class) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Unpaid Principal Balance [Abstract]
Total:	$ 7,228	$ 8,381
Recorded Investment [Abstract]
Total:	6,327	7,420
Related Allowance	281	300
Average Recorded Investment [Abstract]
Total:	6,659	7,685
Interest Income Recognized [Abstract]
Total:	58	301
Consumer Installment
Unpaid Principal Balance [Abstract]
Total:	8	9
Recorded Investment [Abstract]
Total:	8	8
Related Allowance	0	0
Average Recorded Investment [Abstract]
Total:	8	9
Interest Income Recognized [Abstract]
Total:	0	0
Commercial
Unpaid Principal Balance [Abstract]
Total:	313	364
Recorded Investment [Abstract]
Total:	186	228
Related Allowance	0	0
Average Recorded Investment [Abstract]
Total:	198	269
Interest Income Recognized [Abstract]
Total:	4	21
Commercial Real Estate
Unpaid Principal Balance [Abstract]
Total:	2,951	3,145
Recorded Investment [Abstract]
Total:	2,859	3,062
Related Allowance	142	149
Average Recorded Investment [Abstract]
Total:	2,897	3,098
Interest Income Recognized [Abstract]
Total:	29	107
Construction and Farmland
Unpaid Principal Balance [Abstract]
Total:	238	488
Recorded Investment [Abstract]
Total:	230	433
Related Allowance	100	100
Average Recorded Investment [Abstract]
Total:	231	450
Interest Income Recognized [Abstract]
Total:	1	33
Residential Real Estate
Unpaid Principal Balance [Abstract]
Total:	3,718	4,375
Recorded Investment [Abstract]
Total:	3,044	3,689
Related Allowance	39	51
Average Recorded Investment [Abstract]
Total:	3,325	3,859
Interest Income Recognized [Abstract]
Total:	24	140
All Other Loans
Unpaid Principal Balance [Abstract]
Total:	0	0
Recorded Investment [Abstract]
Total:	0	0
Related Allowance	0	0
Average Recorded Investment [Abstract]
Total:	0	0
Interest Income Recognized [Abstract]
Total:	0	0
With No Related Allowance [Member]
Unpaid Principal Balance [Abstract]
With no related allowance:	3,807	4,946
Recorded Investment [Abstract]
With no related allowance:	2,959	4,034
Average Recorded Investment [Abstract]
With no related allowance:	3,284	4,260
Interest Income Recognized [Abstract]
With no related allowance:	21	152
With No Related Allowance [Member] | Commercial - Non Real Estate Commercial And Industrial
Unpaid Principal Balance [Abstract]
With no related allowance:	313	364
Recorded Investment [Abstract]
With no related allowance:	186	228
Average Recorded Investment [Abstract]
With no related allowance:	198	269
Interest Income Recognized [Abstract]
With no related allowance:	4	21
With No Related Allowance [Member] | Commercial Real Estate Owner Occupied
Unpaid Principal Balance [Abstract]
With no related allowance:	260	369
Recorded Investment [Abstract]
With no related allowance:	247	356
Average Recorded Investment [Abstract]
With no related allowance:	252	358
Interest Income Recognized [Abstract]
With no related allowance:	1	4
With No Related Allowance [Member] | Commercial Real Estate Non-Owner Occupied
Unpaid Principal Balance [Abstract]
With no related allowance:	331	407
Recorded Investment [Abstract]
With no related allowance:	248	329
Average Recorded Investment [Abstract]
With no related allowance:	277	335
Interest Income Recognized [Abstract]
With no related allowance:	0	0
With No Related Allowance [Member] | Construction And Farmland Commercial
Unpaid Principal Balance [Abstract]
With no related allowance:	51	301
Recorded Investment [Abstract]
With no related allowance:	43	246
Average Recorded Investment [Abstract]
With no related allowance:	44	263
Interest Income Recognized [Abstract]
With no related allowance:	1	25
With No Related Allowance [Member] | Consumer Installment
Unpaid Principal Balance [Abstract]
With no related allowance:	8	9
Recorded Investment [Abstract]
With no related allowance:	8	8
Average Recorded Investment [Abstract]
With no related allowance:	8	9
Interest Income Recognized [Abstract]
With no related allowance:	0	0
With No Related Allowance [Member] | Residential Equity Lines
Unpaid Principal Balance [Abstract]
With no related allowance:	276	276
Recorded Investment [Abstract]
With no related allowance:	57	65
Average Recorded Investment [Abstract]
With no related allowance:	58	68
Interest Income Recognized [Abstract]
With no related allowance:	0	1
With No Related Allowance [Member] | Residential Single Family
Unpaid Principal Balance [Abstract]
With no related allowance:	2,568	2,854
Recorded Investment [Abstract]
With no related allowance:	2,170	2,435
Average Recorded Investment [Abstract]
With no related allowance:	2,447	2,583
Interest Income Recognized [Abstract]
With no related allowance:	15	80
With No Related Allowance [Member] | Residential Multifamily
Unpaid Principal Balance [Abstract]
With no related allowance:		366
Recorded Investment [Abstract]
With no related allowance:		367
Average Recorded Investment [Abstract]
With no related allowance:		375
Interest Income Recognized [Abstract]
With no related allowance:		21
With No Related Allowance [Member] | All Other Loans
Unpaid Principal Balance [Abstract]
With no related allowance:	0	0
Recorded Investment [Abstract]
With no related allowance:	0	0
Average Recorded Investment [Abstract]
With no related allowance:	0	0
Interest Income Recognized [Abstract]
With no related allowance:	0	0
With An Allowance Recorded [Member]
Unpaid Principal Balance [Abstract]
With an allowance recorded:	3,421	3,435
Recorded Investment [Abstract]
With an allowance recorded:	3,368	3,386
Related Allowance	281	300
Average Recorded Investment [Abstract]
With an allowance recorded:	3,375	3,425
Interest Income Recognized [Abstract]
With an allowance recorded:	37	149
With An Allowance Recorded [Member] | Commercial - Non Real Estate Commercial And Industrial
Unpaid Principal Balance [Abstract]
With an allowance recorded:	0	0
Recorded Investment [Abstract]
With an allowance recorded:	0	0
Related Allowance	0	0
Average Recorded Investment [Abstract]
With an allowance recorded:	0	0
Interest Income Recognized [Abstract]
With an allowance recorded:	0	0
With An Allowance Recorded [Member] | Commercial Real Estate Non-Owner Occupied
Unpaid Principal Balance [Abstract]
With an allowance recorded:	2,360	2,369
Recorded Investment [Abstract]
With an allowance recorded:	2,364	2,377
Related Allowance	142	149
Average Recorded Investment [Abstract]
With an allowance recorded:	2,368	2,405
Interest Income Recognized [Abstract]
With an allowance recorded:	28	103
With An Allowance Recorded [Member] | Construction And Farmland Commercial
Unpaid Principal Balance [Abstract]
With an allowance recorded:	187	187
Recorded Investment [Abstract]
With an allowance recorded:	187	187
Related Allowance	100	100
Average Recorded Investment [Abstract]
With an allowance recorded:	187	187
Interest Income Recognized [Abstract]
With an allowance recorded:	0	8
With An Allowance Recorded [Member] | Consumer Installment
Unpaid Principal Balance [Abstract]
With an allowance recorded:	0	0
Recorded Investment [Abstract]
With an allowance recorded:	0	0
Related Allowance	0	0
Average Recorded Investment [Abstract]
With an allowance recorded:	0	0
Interest Income Recognized [Abstract]
With an allowance recorded:	0	0
With An Allowance Recorded [Member] | Residential Equity Lines
Unpaid Principal Balance [Abstract]
With an allowance recorded:	0	0
Recorded Investment [Abstract]
With an allowance recorded:	0	0
Related Allowance	0	0
Average Recorded Investment [Abstract]
With an allowance recorded:	0	0
Interest Income Recognized [Abstract]
With an allowance recorded:	0	0
With An Allowance Recorded [Member] | Residential Single Family
Unpaid Principal Balance [Abstract]
With an allowance recorded:	874	879
Recorded Investment [Abstract]
With an allowance recorded:	817	822
Related Allowance	39	51
Average Recorded Investment [Abstract]
With an allowance recorded:	820	833
Interest Income Recognized [Abstract]
With an allowance recorded:	9	38
With An Allowance Recorded [Member] | All Other Loans
Unpaid Principal Balance [Abstract]
With an allowance recorded:	0	0
Recorded Investment [Abstract]
With an allowance recorded:	0	0
Related Allowance	0	0
Average Recorded Investment [Abstract]
With an allowance recorded:	0	0
Interest Income Recognized [Abstract]
With an allowance recorded:	$ 0	$ 0

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