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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Issuance of vested shares, shares		800
Retirement plan contribution, shares issued	47,570	66,006
Options exercises, shares	2,969	2,631
Purchase of treasury shares, shares	48,310
Treasury stock shares acquired cost per share	$ 10.58
Additional Paid-in Capital
Issuance of vested shares, shares		800
Retirement plan contribution, shares issued	47,570	66,006
Options exercises, shares	2,969	2,631
Treasury Stock
Issuance of vested shares, shares		800
Retirement plan contribution, shares issued	47,570	66,006
Options exercises, shares	2,969	2,631
Purchase of treasury shares, shares	48,310
Treasury stock shares acquired cost per share	$ 10.58

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

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-Topic 210

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-Number 210

-Section 04

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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 AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 10

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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Total cost of shares repurchased divided by the total number of shares repurchased.

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-Name Accounting Research Bulletin (ARB)

-Number 43

-Chapter 1

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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