Loans and Allowance for Loan and Lease Losses (Allowance And Recorded Investment In Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	$ 7,620	$ 6,439	$ 7,183	$ 6,168
Charge-offs	(40)	(86)	(76)	(185)
Recoveries	33	164	381	194
Provisions	100	395	225	735
Allowance for Loan Losses, Ending Balance	7,713	6,912	7,713	6,912
Allowance for loan losses: Ending balance: individually evaluated for impairment	1,029	774	1,029	774	$ 858
Allowance for loan losses: Ending balance: collectively evaluated for impairment	6,684	6,138	6,684	6,138	6,325
Loans receivables, Ending Balance	862,307	769,153	862,307	769,153	813,924
Loans receivables: Ending balance: individually evaluated for impairment	5,517	4,630	5,517	4,630	5,222
Loans Receivable: Ending balance: collectively evaluated for impairment	855,893	763,202	855,893	763,202	807,471
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	897	1,321	897	1,321	1,231
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	364	303	379	317
Charge-offs		(25)		(25)
Recoveries	5		5
Provisions	35	47	20	33
Allowance for Loan Losses, Ending Balance	404	325	404	325
Allowance for loan losses: Ending balance: individually evaluated for impairment		2		2	1
Allowance for loan losses: Ending balance: collectively evaluated for impairment	404	323	404	323	378
Loans receivables, Ending Balance	38,671	34,579	38,671	34,579	37,608
Loans receivables: Ending balance: individually evaluated for impairment	327	81	327	81	140
Loans Receivable: Ending balance: collectively evaluated for impairment	38,344	34,498	38,344	34,498	37,468
Commercial Portfolio [Member] \| Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	1,630	1,427	1,580	1,393
Charge-offs			(12)
Recoveries	3	1	7	2
Provisions	(5)	(56)	53	(23)
Allowance for Loan Losses, Ending Balance	1,628	1,372	1,628	1,372
Allowance for loan losses: Ending balance: individually evaluated for impairment		3		3	6
Allowance for loan losses: Ending balance: collectively evaluated for impairment	1,628	1,369	1,628	1,369	1,574
Loans receivables, Ending Balance	181,368	160,278	181,368	160,278	172,518
Loans receivables: Ending balance: individually evaluated for impairment		68		68	60
Loans Receivable: Ending balance: collectively evaluated for impairment	181,368	160,210	181,368	160,210	172,458
Commercial Portfolio [Member] \| Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	4,715	3,777	4,323	3,552
Charge-offs	(30)	(54)	(30)	(150)
Recoveries	22	136	361	161
Provisions	274	382	327	678
Allowance for Loan Losses, Ending Balance	4,981	4,241	4,981	4,241
Allowance for loan losses: Ending balance: individually evaluated for impairment	893	769	893	769	711
Allowance for loan losses: Ending balance: collectively evaluated for impairment	4,088	3,472	4,088	3,472	3,612
Loans receivables, Ending Balance	482,141	410,786	482,141	410,786	446,524
Loans receivables: Ending balance: individually evaluated for impairment	3,651	3,657	3,651	3,657	3,246
Loans Receivable: Ending balance: collectively evaluated for impairment	477,917	406,178	477,917	406,178	442,436
Commercial Portfolio [Member] \| Commercial Real Estate [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	573	951	573	951	842
Commercial Portfolio [Member] \| Commercial Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	101	119	144	153
Provisions	39	1	(4)	(33)
Allowance for Loan Losses, Ending Balance	140	120	140	120
Allowance for loan losses: Ending balance: individually evaluated for impairment	70		70		72
Allowance for loan losses: Ending balance: collectively evaluated for impairment	70	120	70	120	72
Loans receivables, Ending Balance	53,305	56,074	53,305	56,074	54,376
Loans receivables: Ending balance: individually evaluated for impairment	571		571		860
Loans Receivable: Ending balance: collectively evaluated for impairment	52,734	56,074	52,734	56,074	53,516
Finance Leases Portfolio [Member] \| Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	1	1	1	1
Allowance for Loan Losses, Ending Balance	1	1	1	1
Allowance for loan losses: Ending balance: collectively evaluated for impairment	1	1	1	1	1
Loans receivables, Ending Balance	307	565	307	565	425
Loans Receivable: Ending balance: collectively evaluated for impairment	307	565	307	565	425
Residential Portfolio [Member] \| Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	532	516	541	534
Charge-offs			(18)
Recoveries	2	25	4	25
Provisions	5	(20)	12	(38)
Allowance for Loan Losses, Ending Balance	539	521	539	521
Allowance for loan losses: Ending balance: individually evaluated for impairment	66		66		68
Allowance for loan losses: Ending balance: collectively evaluated for impairment	473	521	473	521	473
Loans receivables, Ending Balance	102,637	103,822	102,637	103,822	99,457
Loans receivables: Ending balance: individually evaluated for impairment	968	824	968	824	916
Loans Receivable: Ending balance: collectively evaluated for impairment	101,345	102,628	101,345	102,628	98,152
Residential Portfolio [Member] \| Residential Mortgage [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	324	370	324	370	389
Consumer Portfolio [Member] \| Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	3	9	3	12
Charge-offs	(10)	(7)	(16)	(10)
Recoveries	1	2	4	6
Provisions	10	5	13	1
Allowance for Loan Losses, Ending Balance	4	9	4	9
Allowance for loan losses: Ending balance: collectively evaluated for impairment	4	9	4	9	3
Loans receivables, Ending Balance	3,878	3,049	3,878	3,049	3,016
Loans Receivable: Ending balance: collectively evaluated for impairment	3,878	3,049	3,878	3,049	3,016
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	274	287	212	206
Provisions	(258)	36	(196)	117
Allowance for Loan Losses, Ending Balance	16	323	16	323
Allowance for loan losses: Ending balance: collectively evaluated for impairment	$ 16	$ 323	$ 16	$ 323	$ 212

A valuation allowance for financing receivables that are expected to be uncollectible.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
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No definition available.

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Amount of direct write-downs of financing receivables charged against the allowance.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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The balance of financing receivables that were collectively evaluated for impairment.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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The balance of financing receivables that were individually evaluated for impairment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of expense related to estimated loss from loan and lease transactions.

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-Publisher FASB
-Name Accounting Standards Codification
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