Allowance For Loan Losses (Schedule Of Allowance For Loan Loss By Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	$ 19,730	$ 19,251
Allowance for loan loss, Charge-offs	(1,622)	(1,170)
Allowance for loan loss, Recoveries	420	695
Allowance for loan loss, Provision for acquired loans	(19)	40
Allowance for loan loss, Provision	700	499
Allowance for loan loss, Ending balance	19,209	19,315
Allowance for loan loss, Evaluated for impairment, Individually	636		$ 665
Allowance for loan loss, Evaluated for impairment, Collectively	18,373		18,848
Allowance for loan loss, Total	19,209		19,730
Loans, Evaluated for impairment, Individually	7,223		7,581
Loans, Evaluated for impairment, Collectively	3,056,850		3,028,202
Total	3,074,173		3,046,226
Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	200		217
Loans, Acquired with deteriorated credit quality	10,100		10,443
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	4,206	3,271
Allowance for loan loss, Charge-offs	(53)	(1)
Allowance for loan loss, Recoveries	2	1
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	128	632
Allowance for loan loss, Ending balance	4,283	3,903
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	4,277		4,200
Allowance for loan loss, Total	4,283		4,206
Loans, Evaluated for impairment, Individually	1,282		1,611
Loans, Evaluated for impairment, Collectively	203,420		183,741
Total	205,011		185,667
Commercial And Industrial [Member] \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	6		6
Loans, Acquired with deteriorated credit quality	309		315
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	6,573	6,985
Allowance for loan loss, Charge-offs	(180)	(302)
Allowance for loan loss, Recoveries	11	384
Allowance for loan loss, Provision for acquired loans	(19)	40
Allowance for loan loss, Provision	(381)	(703)
Allowance for loan loss, Ending balance	6,004	6,404
Allowance for loan loss, Evaluated for impairment, Individually	636		665
Allowance for loan loss, Evaluated for impairment, Collectively	5,267		5,788
Allowance for loan loss, Total	6,004		6,573
Loans, Evaluated for impairment, Individually	5,941		5,970
Loans, Evaluated for impairment, Collectively	1,237,110		1,216,050
Total	1,250,106		1,229,516
Commercial Real Estate [Member] \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	101		120
Loans, Acquired with deteriorated credit quality	7,055		7,496
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	6,680	6,778
Allowance for loan loss, Charge-offs	(626)	(405)
Allowance for loan loss, Recoveries	25	39
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	644	347
Allowance for loan loss, Ending balance	6,723	6,759
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	6,632		6,589
Allowance for loan loss, Total	6,723		6,680
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	1,442,174		1,448,830
Total	1,444,795		1,451,462
Residential Real Estate [Member] \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	91		91
Loans, Acquired with deteriorated credit quality	2,621		2,632
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	1,417	1,463
Allowance for loan loss, Charge-offs	(121)	(106)
Allowance for loan loss, Recoveries	0	0
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	3	45
Allowance for loan loss, Ending balance	1,299	1,402
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	1,299		1,417
Allowance for loan loss, Total	1,299		1,417
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	139,165		141,965
Total	139,165		141,965
Home Equity [Member] \| 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 Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	82	97
Allowance for loan loss, Charge-offs	(6)	(38)
Allowance for loan loss, Recoveries	11	29
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	(23)	5
Allowance for loan loss, Ending balance	64	93
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	62		82
Allowance for loan loss, Total	64		82
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	31,928		32,545
Total	32,043		32,545
Consumer Loan [Member] \| Receivables Acquired with Deteriorated Credit Quality [Domain]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Acquired with deteriorated credit quality	2		0
Loans, Acquired with deteriorated credit quality	115		0
Demand Deposit Account Overdrafts [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan loss, Beginning balance	772	657
Allowance for loan loss, Charge-offs	(636)	(318)
Allowance for loan loss, Recoveries	371	242
Allowance for loan loss, Provision for acquired loans	0	0
Allowance for loan loss, Provision	329	173
Allowance for loan loss, Ending balance	836	$ 754
Allowance for loan loss, Evaluated for impairment, Individually	0		0
Allowance for loan loss, Evaluated for impairment, Collectively	836		772
Allowance for loan loss, Total	836		772
Loans, Evaluated for impairment, Individually	0		0
Loans, Evaluated for impairment, Collectively	3,053		5,071
Total	3,053		5,071
Demand Deposit Account Overdrafts [Member] \| 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

Loans, Acquired with Deteriorated Credit Quality

No definition available.

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- Definition

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)
-URI http://asc.fasb.org/extlink&oid=6379141&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=27045933&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.

+ Details

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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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.

+ References

No definition available.

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

+ Details

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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)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: 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=66008989&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

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- Definition

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.

+ References

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