Loans (Recorded Investment By Loan Class In Current And Nonaccrual Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 2,985	$ 3,808
60-89 Days Past Due	315	517
Greater Than 90 Days	8	8
Total Past Due	3,308	4,333
Nonaccrual	11,064	10,145
Current	1,878,018	1,866,593
Total loans	1,892,390us-gaap_NotesReceivableGross	1,881,071us-gaap_NotesReceivableGross	1,817,471us-gaap_NotesReceivableGross
Commercial Business [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	801	28
Total Past Due	801	28
Nonaccrual	4,587	4,288
Current	272,039	263,061
Total loans	277,427	267,377	268,308
Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	56	83
60-89 Days Past Due	28
Total Past Due	84	83
Nonaccrual	3,411	3,020
Current	476,984	473,304
Total loans	480,479	476,407	469,725
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	314	321
Total Past Due	314	321
Nonaccrual	1,361	1,194
Current	96,175	98,726
Total loans	97,850	100,241	110,290
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	577	799
60-89 Days Past Due	100	67
Total Past Due	677	866
Nonaccrual	672	463
Current	378,721	378,445
Total loans	380,070	379,774	326,744
Consumer Indirect [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,164	2,429
60-89 Days Past Due	161	402
Total Past Due	1,325	2,831
Nonaccrual	994	1,169
Current	635,061	632,357
Total loans	637,380	636,357	620,916
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	73	148
60-89 Days Past Due	26	48
Greater Than 90 Days	8	8
Total Past Due	107	204
Nonaccrual	39	11
Current	19,038	20,700
Total loans	$ 19,184	$ 20,915	$ 21,488

Financing receivables that are less than 60 days past due but more than 29 days past due.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524

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- Definition

Financing receivables that are less than 90 days past due but more than 59 days past due.

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Financing receivables that are current.

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Financing receivables that are equal to or greater than 90 days past due.

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524

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- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

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Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Subparagraph 3

-Article 9

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