Loans and Allowance for Loan and Lease Losses (Allowance And Recorded Investment In Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	$ 7,713	$ 6,912	$ 7,183	$ 6,168
Charge-offs	(239)	(49)	(315)	(234)
Recoveries	28	34	409	228
Provisions		585	225	1,320
Allowance for Loan Losses, Ending Balance	7,502	7,482	7,502	7,482
Allowance for loan losses: Ending balance: individually evaluated for impairment	691	1,594	691	1,594	$ 858
Allowance for loan losses: Ending balance: collectively evaluated for impairment	6,811	5,888	6,811	5,888	6,325
Loans receivables, Ending Balance	877,386	791,484	877,386	791,484	813,924
Loans receivables: Ending balance: individually evaluated for impairment	8,212	5,220	8,212	5,220	5,222
Loans Receivable: Ending balance: collectively evaluated for impairment	868,290	784,912	868,290	784,912	807,471
Receivables Acquired with Deteriorated Credit Quality [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending Balance	884	1,352	884	1,352	1,231
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	404	325	379	317
Charge-offs	(20)		(20)	(25)
Recoveries			5
Provisions	53	27	73	60
Allowance for Loan Losses, Ending Balance	437	352	437	352
Allowance for loan losses: Ending balance: individually evaluated for impairment		2		2	1
Allowance for loan losses: Ending balance: collectively evaluated for impairment	437	350	437	350	378
Loans receivables, Ending Balance	40,350	36,451	40,350	36,451	37,608
Loans receivables: Ending balance: individually evaluated for impairment	261	90	261	90	140
Loans Receivable: Ending balance: collectively evaluated for impairment	40,089	36,361	40,089	36,361	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	1,628	1,372	1,580	1,393
Charge-offs			(12)
Recoveries	5	1	11	3
Provisions	166	759	220	736
Allowance for Loan Losses, Ending Balance	1,799	2,132	1,799	2,132
Allowance for loan losses: Ending balance: individually evaluated for impairment	150	828	150	828	6
Allowance for loan losses: Ending balance: collectively evaluated for impairment	1,649	1,304	1,649	1,304	1,574
Loans receivables, Ending Balance	182,857	168,075	182,857	168,075	172,518
Loans receivables: Ending balance: individually evaluated for impairment	4,460	885	4,460	885	60
Loans Receivable: Ending balance: collectively evaluated for impairment	178,397	167,190	178,397	167,190	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	4,981	4,241	4,323	3,552
Charge-offs	(207)	(43)	(237)	(193)
Recoveries	22	29	383	190
Provisions	(326)	108	1	786
Allowance for Loan Losses, Ending Balance	4,470	4,335	4,470	4,335
Allowance for loan losses: Ending balance: individually evaluated for impairment	375	764	375	764	711
Allowance for loan losses: Ending balance: collectively evaluated for impairment	4,095	3,571	4,095	3,571	3,612
Loans receivables, Ending Balance	490,603	421,452	490,603	421,452	446,524
Loans receivables: Ending balance: individually evaluated for impairment	2,148	3,398	2,148	3,398	3,246
Loans Receivable: Ending balance: collectively evaluated for impairment	487,886	417,082	487,886	417,082	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	569	972	569	972	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	140	120	144	153
Provisions	36		32	(33)
Allowance for Loan Losses, Ending Balance	176	120	176	120
Allowance for loan losses: Ending balance: individually evaluated for impairment	100		100		72
Allowance for loan losses: Ending balance: collectively evaluated for impairment	76	120	76	120	72
Loans receivables, Ending Balance	58,074	57,319	58,074	57,319	54,376
Loans receivables: Ending balance: individually evaluated for impairment	487		487		860
Loans Receivable: Ending balance: collectively evaluated for impairment	57,587	57,319	57,587	57,319	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
Provisions	(1)		(1)
Allowance for Loan Losses, Ending Balance		1		1
Allowance for loan losses: Ending balance: collectively evaluated for impairment		1		1	1
Loans receivables, Ending Balance	259	506	259	506	425
Loans Receivable: Ending balance: collectively evaluated for impairment	259	506	259	506	425
Residential Portfolio [Member] \| Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	539	521	541	534
Charge-offs	(7)	(4)	(25)	(4)
Recoveries			4	25
Provisions	7	15	19	(23)
Allowance for Loan Losses, Ending Balance	539	532	539	532
Allowance for loan losses: Ending balance: individually evaluated for impairment	66		66		68
Allowance for loan losses: Ending balance: collectively evaluated for impairment	473	532	473	532	473
Loans receivables, Ending Balance	101,073	104,483	101,073	104,483	99,457
Loans receivables: Ending balance: individually evaluated for impairment	856	847	856	847	916
Loans Receivable: Ending balance: collectively evaluated for impairment	99,902	103,256	99,902	103,256	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	315	380	315	380	389
Consumer Portfolio [Member] \| Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	4	9	3	12
Charge-offs	(5)	(2)	(21)	(12)
Recoveries	1	4	6	10
Provisions	5	(1)	17
Allowance for Loan Losses, Ending Balance	5	10	5	10
Allowance for loan losses: Ending balance: collectively evaluated for impairment	5	10	5	10	3
Loans receivables, Ending Balance	4,170	3,198	4,170	3,198	3,016
Loans Receivable: Ending balance: collectively evaluated for impairment	4,170	3,198	4,170	3,198	3,016
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning Balance	16	323	212	206
Provisions	60	$ (323)	(136)	$ (206)
Allowance for Loan Losses, Ending Balance	76		76
Allowance for loan losses: Ending balance: collectively evaluated for impairment	$ 76		$ 76		$ 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
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-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
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-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.

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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
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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
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The balance of financing receivables that were individually evaluated for impairment.

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-Publisher FASB
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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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Amount of expense related to estimated loss from loan and lease transactions.

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-Publisher FASB
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