Loan Quality and Allowance for Loan Losses (Allowance For Loan Losses, By Loan Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	$ 12,415	$ 11,792
Charge-offs	(969)	(9,589)
Recoveries	283	258
Provision	237	9,954
Allowance, Ending Balance	11,966	12,415
Loans evaluated for allowance individually	12,176	11,140
Loans evaluated for allowance collectively	922,399	962,235
Total Loans	934,575	973,375
Allowance established for loan evaluated collectively	11,966	12,415
Total Allowance	11,966	12,415
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	190,543	196,120
Residential Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	108	224
Charge-offs	(123)
Provision	199	(116)
Allowance, Ending Balance	184	108
Loans evaluated for allowance individually	523	455
Loans evaluated for allowance collectively	12,800	9,770
Total Loans	13,323	10,225
Allowance established for loan evaluated collectively	184	108
Total Allowance	184	108
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	5,698	6,526
Charge-offs	(564)
Recoveries	72	60
Provision	816	(888)
Allowance, Ending Balance	6,022	5,698
Loans evaluated for allowance individually	10,994	10,099
Loans evaluated for allowance collectively	483,268	477,881
Total Loans	494,262	487,980
Allowance established for loan evaluated collectively	6,022	5,698
Total Allowance	6,022	5,698
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	4,511	2,110
Charge-offs	(93)	(9,482)
Recoveries	170	157
Provision	(773)	11,726
Allowance, Ending Balance	3,815	4,511
Loans evaluated for allowance individually		181
Loans evaluated for allowance collectively	230,007	273,873
Total Loans	230,007	274,054
Allowance established for loan evaluated collectively	3,815	4,511
Total Allowance	3,815	4,511
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	70	105
Charge-offs	(125)	(107)
Recoveries	35	31
Provision	104	41
Allowance, Ending Balance	84	70
Loans evaluated for allowance collectively	6,440	4,996
Total Loans	6,440	4,996
Allowance established for loan evaluated collectively	84	70
Total Allowance	84	70
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	1,404	1,437
Provision	(78)	(33)
Allowance, Ending Balance	1,326	1,404
Allowance established for loan evaluated collectively	1,326	1,404
Total Allowance	1,326	1,404
First Liens [Member] \| Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	491	1,060
Charge-offs	(52)
Recoveries	5	2
Provision	(28)	(571)
Allowance, Ending Balance	416	491
Loans evaluated for allowance individually	659	405
Loans evaluated for allowance collectively	142,287	148,495
Total Loans	142,946	148,900
Allowance established for loan evaluated collectively	416	491
Total Allowance	416	491
Junior Liens & Lines Of Credit [Member] \| Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance	133	330
Charge-offs	(12)
Recoveries	1	8
Provision	(3)	(205)
Allowance, Ending Balance	119	133
Loans evaluated for allowance collectively	47,597	47,220
Total Loans	47,597	47,220
Allowance established for loan evaluated collectively	119	133
Total Allowance	$ 119	$ 133

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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