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Consolidated Statement of Changes to Shareholders Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Issuance of shares of restricted stock, Shares	13,250us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross	11,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross	11,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
Cash dividends declared, per share	$ 0.84us-gaap_CommonStockDividendsPerShareDeclared	$ 0.81us-gaap_CommonStockDividendsPerShareDeclared	$ 0.78us-gaap_CommonStockDividendsPerShareDeclared
Common Stock [Member]
Issuance of shares of restricted stock, Shares	13,250us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	11,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	11,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Issuance of shares of restricted stock, forfeitures	780us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	620us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember	1,135us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember

X

- Definition

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

+ 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 S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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

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- Definition

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

+ References

Reference 1: 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



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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



Reference 3: 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

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

+ References

Reference 1: 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



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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