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Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Consolidated Statements Of Changes In Shareholders' Equity [Abstract]
Common stock dividends, per share	$ 0.245us-gaap_CommonStockDividendsPerShareDeclared	$ 0.2167us-gaap_CommonStockDividendsPerShareDeclared
Stock options exercised, shares	13,052us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised	7,716us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised

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 FASB



-Name Accounting Standards Codification



-Topic 505



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.3-04)



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X

- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef



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Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



-Section S99



-Paragraph 1



-Subparagraph (SX 210.5-02.28,29)



-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682







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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



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-Subparagraph (c)(1)(iv)(2)



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Reference 5: 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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