Allowance For Loan Losses (Schedule Of Allowance For Loan Loss By Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	$ 18,836	$ 19,730
Allowance for loan loss, Charge-offs	(1,433)	(1,622)
Allowance for loan loss, Recoveries	797	420
Allowance for loan loss, Provision for acquired loans	0	(19)
Allowance for loan loss, Provision	181	700
Allowance for loan loss, Ending balance	18,381	19,209
Allowance for loan loss, Evaluated for impairment, Individually	172		$ 647
Allowance for loan loss, Evaluated for impairment, Collectively	18,034		17,858
Allowance for loan loss, Total	18,381		18,836
Loans, Evaluated for impairment, Individually	9,606		9,667
Loans, Evaluated for impairment, Collectively	3,119,677		3,109,146
Total	3,137,681		3,127,410
Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	175		331
Loans, Acquired with deteriorated credit quality	8,398		8,597
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	4,571	4,206
Allowance for loan loss, Charge-offs	(339)	(53)
Allowance for loan loss, Recoveries	2	2
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	529	128
Allowance for loan loss, Ending balance	4,763	4,283
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	4,759		4,567
Allowance for loan loss, Total	4,763		4,571
Loans, Evaluated for impairment, Individually	849		849
Loans, Evaluated for impairment, Collectively	203,537		207,429
Total	204,592		208,484
Commercial and industrial \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	4		4
Loans, Acquired with deteriorated credit quality	206		206
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	6,183	6,573
Allowance for loan loss, Charge-offs	(157)	(180)
Allowance for loan loss, Recoveries	223	11
Allowance for loan loss, Provision for acquired loans	0	(19)
Allowance for loan loss, Provision	(480)	(381)
Allowance for loan loss, Ending balance	5,769	6,004
Allowance for loan loss, Evaluated for impairment, Individually	172		647
Allowance for loan loss, Evaluated for impairment, Collectively	5,530		5,313
Allowance for loan loss, Total	5,769		6,183
Loans, Evaluated for impairment, Individually	8,757		8,818
Loans, Evaluated for impairment, Collectively	1,282,064		1,263,076
Total	1,296,304		1,277,576
Commercial real estate \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	67		223
Loans, Acquired with deteriorated credit quality	5,483		5,682
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	5,212	6,680
Allowance for loan loss, Charge-offs	(131)	(626)
Allowance for loan loss, Recoveries	106	25
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	(244)	644
Allowance for loan loss, Ending balance	4,943	6,723
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	4,843		5,112
Allowance for loan loss, Total	4,943		5,212
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	1,462,622		1,465,685
Total	1,465,215		1,468,278
Residential real estate \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	100		100
Loans, Acquired with deteriorated credit quality	2,593		2,593
Home equity
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	1,138	1,417
Allowance for loan loss, Charge-offs	(71)	(121)
Allowance for loan loss, Recoveries	0	0
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	133	3
Allowance for loan loss, Ending balance	1,200	1,299
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	1,200		1,138
Allowance for loan loss, Total	1,200		1,138
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	138,477		139,499
Total	138,477		139,499
Home equity \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	0		0
Loans, Acquired with deteriorated credit quality	0		0
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	62	82
Allowance for loan loss, Charge-offs	(99)	(6)
Allowance for loan loss, Recoveries	46	11
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	203	(23)
Allowance for loan loss, Ending balance	212	64
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	208		58
Allowance for loan loss, Total	212		62
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	29,454		29,046
Total	29,570		29,162
Consumer \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	4		4
Loans, Acquired with deteriorated credit quality	116		116
DDA overdrafts
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	1,670	772
Allowance for loan loss, Charge-offs	(636)	(636)
Allowance for loan loss, Recoveries	420	371
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	40	329
Allowance for loan loss, Ending balance	1,494	$ 836
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	1,494		1,670
Allowance for loan loss, Total	1,494		1,670
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	3,523		4,411
Total	3,523		4,411
DDA overdrafts \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	0		0
Loans, Acquired with deteriorated credit quality	$ 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.

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)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

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- Definition

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.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

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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.

+ References

No definition available.

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- Definition

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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- Definition

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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- Definition

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
-Subparagraph (g)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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 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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