Loans (Changes In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	$ 34,672	$ 30,934
Charge-offs	(3,649)	(4,201)
Recoveries	1,622	1,567
Provision (credit)	2,949	2,781
Ending balance	35,594	31,081
Allowance for loan losses, Individually Evaluated for impairment	2,418	1,962
Allowance for loan losses, Collectively Evaluated for impairment	33,176	29,119
Loans, Ending balance	2,752,450	2,366,640	$ 2,694,922
Loans, Individually Evaluated for impairment	7,244	4,744
Loans, Collectively Evaluated for impairment	2,745,206	2,361,896
Commercial Business [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	15,668	7,225
Charge-offs	(105)	(1,122)
Recoveries	120	158
Provision (credit)	(741)	7,742
Ending balance	14,942	14,003
Allowance for loan losses, Individually Evaluated for impairment	1,699	1,842
Allowance for loan losses, Collectively Evaluated for impairment	13,243	12,161
Loans, Ending balance	463,526	374,992	449,763
Loans, Individually Evaluated for impairment	4,453	3,549
Loans, Collectively Evaluated for impairment	459,073	371,443
Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	3,696	10,315
Charge-offs	(4)	(10)
Recoveries	7	214
Provision (credit)	1,774	(6,852)
Ending balance	5,473	3,667
Allowance for loan losses, Individually Evaluated for impairment	719	120
Allowance for loan losses, Collectively Evaluated for impairment	4,754	3,547
Loans, Ending balance	823,305	676,455	810,851
Loans, Individually Evaluated for impairment	2,791	1,195
Loans, Collectively Evaluated for impairment	820,514	675,260
Residential Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	1,322	1,478
Charge-offs	(19)	(14)
Recoveries	69	40
Provision (credit)	28	(64)
Ending balance	1,400	1,440
Allowance for loan losses, Collectively Evaluated for impairment	1,400	1,440
Loans, Ending balance	470,111	421,614	457,761
Loans, Collectively Evaluated for impairment	470,111	421,614
Residential Real Estate Lines [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	180	303
Charge-offs	(94)	(43)
Recoveries	3	10
Provision (credit)	129	(56)
Ending balance	218	214
Allowance for loan losses, Collectively Evaluated for impairment	218	214
Loans, Ending balance	112,428	118,056	113,422
Loans, Collectively Evaluated for impairment	112,428	118,056
Consumer Indirect [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	13,415	11,311
Charge-offs	(2,994)	(2,809)
Recoveries	1,330	1,051
Provision (credit)	1,481	1,909
Ending balance	13,232	11,462
Allowance for loan losses, Collectively Evaluated for impairment	13,232	11,462
Loans, Ending balance	866,598	758,761	845,682
Loans, Collectively Evaluated for impairment	866,598	758,761
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning balance	391	302
Charge-offs	(433)	(203)
Recoveries	93	94
Provision (credit)	278	102
Ending balance	329	295
Allowance for loan losses, Collectively Evaluated for impairment	329	295
Loans, Ending balance	16,482	16,762	$ 17,443
Loans, Collectively Evaluated for impairment	$ 16,482	$ 16,762

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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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

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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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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

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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