Allowance For Loan Losses (Schedule Of Allowance For Loan Loss By Portfolio Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Allowance for Loan Losses [Roll Forward]
Beginning balance	$ 19,730	$ 19,251
Charge-offs	(5,934)	(5,486)
Recoveries	2,034	1,570
Provision	(2,845)	(4,232)
Provision for acquired loans with deteriorated credit quality	161	163
Ending balance	18,836	19,730
Allowance for loan loss, Evaluated for impairment, Individually	647	665
Allowance for loan loss, Evaluated for impairment, Collectively	17,858	18,848
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	331	217
Allowance for loan loss, Total	18,836	19,730
Loans, Evaluated for impairment, Individually	9,667	7,581
Loans, Evaluated for impairment, Collectively	3,109,146	3,028,202
Gross loans	3,127,410	3,046,226
Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Beginning balance	4,206	3,271
Charge-offs	(400)	(148)
Recoveries	58	14
Provision	(707)	(1,069)
Provision for acquired loans with deteriorated credit quality	0	0
Ending balance	4,571	4,206
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	4,567	4,200
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	4	6
Allowance for loan loss, Total	4,571	4,206
Loans, Evaluated for impairment, Individually	849	1,611
Loans, Evaluated for impairment, Collectively	207,429	183,741
Gross loans	208,484	185,667
Commercial real estate
Allowance for Loan Losses [Roll Forward]
Beginning balance	6,573	6,985
Charge-offs	(720)	(1,676)
Recoveries	112	487
Provision	(57)	(614)
Provision for acquired loans with deteriorated credit quality	161	163
Ending balance	6,183	6,573
Allowance for loan loss, Evaluated for impairment, Individually	647	665
Allowance for loan loss, Evaluated for impairment, Collectively	5,313	5,788
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	223	120
Allowance for loan loss, Total	6,183	6,573
Loans, Evaluated for impairment, Individually	8,818	5,970
Loans, Evaluated for impairment, Collectively	1,263,076	1,216,050
Gross loans	1,277,576	1,229,516
Residential real estate
Allowance for Loan Losses [Roll Forward]
Beginning balance	6,680	6,778
Charge-offs	(1,637)	(1,734)
Recoveries	294	187
Provision	125	(1,449)
Provision for acquired loans with deteriorated credit quality	0	0
Ending balance	5,212	6,680
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	5,112	6,589
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	100	91
Allowance for loan loss, Total	5,212	6,680
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	1,465,685	1,448,830
Gross loans	1,468,278	1,451,462
Home equity
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,417	1,463
Charge-offs	(403)	(390)
Recoveries	45	0
Provision	(79)	(344)
Provision for acquired loans with deteriorated credit quality	0	0
Ending balance	1,138	1,417
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	1,138	1,417
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	0	0
Allowance for loan loss, Total	1,138	1,417
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	139,499	141,965
Gross loans	139,499	141,965
Consumer Loan
Allowance for Loan Losses [Roll Forward]
Beginning balance	82	97
Charge-offs	(60)	(126)
Recoveries	63	118
Provision	23	7
Provision for acquired loans with deteriorated credit quality	0	0
Ending balance	62	82
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	58	82
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	4	0
Allowance for loan loss, Total	62	82
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	29,046	32,545
Gross loans	29,162	32,545
DDA Overdrafts
Allowance for Loan Losses [Roll Forward]
Beginning balance	772	657
Charge-offs	(2,714)	(1,412)
Recoveries	1,462	764
Provision	(2,150)	(763)
Provision for acquired loans with deteriorated credit quality	0	0
Ending balance	1,670	772
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	1,670	772
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	0	0
Allowance for loan loss, Total	1,670	772
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	4,411	5,071
Gross loans	4,411	5,071
Receivables Acquired with Deteriorated Credit Quality [Member]
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	8,597	10,443
Receivables Acquired with Deteriorated Credit Quality [Member] \| Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	206	315
Receivables Acquired with Deteriorated Credit Quality [Member] \| Commercial real estate
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	5,682	7,496
Receivables Acquired with Deteriorated Credit Quality [Member] \| Residential real estate
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	2,593	2,632
Receivables Acquired with Deteriorated Credit Quality [Member] \| Home equity
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	0	0
Receivables Acquired with Deteriorated Credit Quality [Member] \| Consumer Loan
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	116	0
Receivables Acquired with Deteriorated Credit Quality [Member] \| DDA Overdrafts
Allowance for Loan Losses [Roll Forward]
Loans, Acquired with Deteriorated Credit Quality	$ 0	$ 0

Loans, Acquired with Deteriorated Credit Quality

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Reserve for loans impairments recorded after acquisition as a result of current information and events which result in it being probable that estimated cash flows will be less than previously expected or because actual cash flows are less than cash flows previously expected. This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(2)
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- Definition

Amount of expense related to loan loss not accounted for as debt securities, with evidence of deterioration of credit quality.

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No definition available.

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

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

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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- Definition

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of direct write-downs of financing receivables charged against the allowance.

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

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

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- Definition

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.

+ 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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- Definition

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

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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