Consolidated Statements Of Changes In Stockholders’ Equity (Parenthetical) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements Of Changes In Stockholders’ Equity [Abstract]
Cash dividends per common share	$ 0.65	$ 0.26	$ 0.68
Shares issued through stock options exercise		4,100	1,439
Shares issued under dividend reinvestment plan			17,785
Shares reissued under dividend reinvestment plan	11,265	5,126	380
Reissued Restricted Shares	186evbn_ReissuedRestrictedShares
Restricted shares issued	20,517	19,431	10,145
Restricted shares forfeited	5,998	2,191	1,348
Shares issued under Employee Stock Purchase Plan	12,821	13,455	16,831
Shares repurchased into Treasury Stock	59,800us-gaap_TreasuryStockSharesAcquired	13,032us-gaap_TreasuryStockSharesAcquired
Shares reissued through stock options exercise	23,331	3,000

Reissued Restricted Shares

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- Definition

Stock Issued During Period Shares Stock Options Exercised, Net Of Stock Swaps

+ References

No definition available.

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- Definition

Stock Reissued During Period Shares alue Dividend Reinvestment Plan

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No definition available.

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Stock Reissued During Period Shares Stock Options Exercised

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

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- Definition

Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

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-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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- Definition

Number of shares related to Restricted Stock Award forfeited during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Paragraph 29, 30

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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