Stockholders' Equity (Stock Rollforward) (Details)			3 Months Ended
Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Common Stock	Mar. 31, 2014 Treasury Stock
Increase (Decrease) in Stock by Class [Roll Forward]
Common stock, beginning of period	11,260,232	11,206,576	11,206,576
Treasury stock, beginning of period	602,663	600,794		600,794
Changes related to stock-based compensation awards:
Release of restricted shares			48,621
Release of restricted shares				11,189
Changes related to deferred compensation plan:
Purchase of treasury stock				894
Reissuance of treasury stock				(7,910)
Shares issued under dividend reinvestment plan			5,035
Reissuance of treasury stock under Board of Directors' compensation plan			0	(2,304)
Common stock, end of period	11,260,232	11,206,576	11,260,232
Treasury stock, end of period	602,663	600,794		602,663

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Common Stock, Released From Restrictions Due to Expiration

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Treasury Stock, Released From Restrictions Due to Expiration

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

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Number of share instruments newly issued under a share-based compensation plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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-Name Accounting Standards Codification

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Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

+ References

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

-Publisher FASB

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

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