Allowance For Loan Losses (Schedule Of Allowance For Loan Loss By Portfolio Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Loan Losses [Roll Forward]
Beginning balance	$ 15,966	$ 18,836	$ 19,730
Charge-offs	(6,654)	(5,473)	(5,934)
Recoveries	3,527	4,913	2,034
Provision	1,250	2,310	(3,006)
Ending balance	11,589	15,966	18,836
Allowance for loan loss, Evaluated for impairment, Individually	87	428
Allowance for loan loss, Evaluated for impairment, Collectively	11,189	15,478
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	313	60
Allowance for loan loss, Total	11,589	15,966
Loans, Evaluated for impairment, Individually	6,691	10,506
Loans, Evaluated for impairment, Collectively	3,597,946	3,561,834
Gross loans	3,616,099	3,587,608
Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Beginning balance	4,060	4,571	4,206
Charge-offs	(261)	(733)	(400)
Recoveries	764	2,152	58
Provision	2,504	1,930	(707)
Ending balance	2,059	4,060	4,571
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	1,784	4,059
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	275	1
Allowance for loan loss, Total	2,059	4,060
Loans, Evaluated for impairment, Individually	501	651
Loans, Evaluated for impairment, Collectively	306,372	284,018
Gross loans	308,015	286,314
Commercial real estate
Allowance for Loan Losses [Roll Forward]
Beginning balance	4,495	6,183	6,573
Charge-offs	(1,358)	(369)	(720)
Recoveries	624	732	112
Provision	1,155	2,051	(218)
Ending balance	2,606	4,495	6,183
Allowance for loan loss, Evaluated for impairment, Individually	87	428
Allowance for loan loss, Evaluated for impairment, Collectively	2,488	4,015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	31	52
Allowance for loan loss, Total	2,606	4,495
Loans, Evaluated for impairment, Individually	6,190	9,855
Loans, Evaluated for impairment, Collectively	1,445,522	1,433,674
Gross loans	1,459,737	1,454,942
Residential real estate
Allowance for Loan Losses [Roll Forward]
Beginning balance	4,116	5,212	6,680
Charge-offs	(787)	(682)	(1,637)
Recoveries	369	367	294
Provision	250	781	125
Ending balance	3,448	4,116	5,212
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	3,448	4,116
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	0	0
Allowance for loan loss, Total	3,448	4,116
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	1,638,204	1,633,241
Gross loans	1,640,396	1,635,338
Home equity
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,268	1,138	1,417
Charge-offs	(294)	(219)	(403)
Recoveries	0	0	45
Provision	(213)	(349)	(79)
Ending balance	1,187	1,268	1,138
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	1,187	1,268
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	0	0
Allowance for loan loss, Total	1,187	1,268
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	148,928	153,496
Gross loans	148,928	153,496
Consumer Loan
Allowance for Loan Losses [Roll Forward]
Beginning balance	319	62	82
Charge-offs	(1,177)	(769)	(60)
Recoveries	265	166	63
Provision	(1,568)	(860)	23
Ending balance	975	319	62
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	968	312
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	7	7
Allowance for loan loss, Total	975	319
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	54,160	51,077
Gross loans	54,263	51,190
DDA Overdrafts
Allowance for Loan Losses [Roll Forward]
Beginning balance	1,708	1,670	772
Charge-offs	(2,777)	(2,701)	(2,714)
Recoveries	1,505	1,496	1,462
Provision	(878)	(1,243)	(2,150)
Ending balance	1,314	1,708	$ 1,670
Allowance for loan loss, Evaluated for impairment, Individually	0	0
Allowance for loan loss, Evaluated for impairment, Collectively	1,314	1,708
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	0	0
Allowance for loan loss, Total	1,314	1,708
Loans, Evaluated for impairment, Individually	0	0
Loans, Evaluated for impairment, Collectively	4,760	6,328
Gross loans	4,760	6,328
Financial Asset Acquired with Credit Deterioration [Member]
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	11,462	15,268
Financial Asset Acquired with Credit Deterioration [Member] \| Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	1,142	1,645
Financial Asset Acquired with Credit Deterioration [Member] \| Commercial real estate
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	8,025	11,413
Financial Asset Acquired with Credit Deterioration [Member] \| Residential real estate
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	2,192	2,097
Financial Asset Acquired with Credit Deterioration [Member] \| Home equity
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	0	0
Financial Asset Acquired with Credit Deterioration [Member] \| Consumer Loan
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	103	113
Financial Asset Acquired with Credit Deterioration [Member] \| DDA Overdrafts
Allowance for Loan Losses [Roll Forward]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net	$ 0	$ 0

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.

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The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were 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.

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

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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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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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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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