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USD ($)

USD ($) / shares
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USD ($)

USD ($) / shares

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USD ($)

USD ($) / shares
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 -Number 123R
 -Paragraph A240
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 -Name Statement of Financial Accounting Standard (FAS)
 -Number 123R
 -Paragraph A240
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 123R
 -Paragraph A240
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12/31/2010
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1/1/2010 - 12/31/2010
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1/1/2010 - 12/31/2010
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 -Publisher FASB
 -Name Statement of Financial Accounting Standard (FAS)
 -Number 123R
 -Paragraph A240
 -Subparagraph a

</ElementReferences><IsTotalLabel>false</IsTotalLabel><IsEPS>false</IsEPS><Label>The average vesting period for restricted awards granted</Label></Row></Rows><Footnotes /><NumberOfCols>3</NumberOfCols><NumberOfRows>32</NumberOfRows><ReportName>Stock Based Compensation (Details Textuals) (USD $)</ReportName><MonetaryRoundingLevel>HundredThousands</MonetaryRoundingLevel><SharesRoundingLevel>NoRounding</SharesRoundingLevel><PerShareRoundingLevel>NoRounding</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><SharesShouldBeRounded>true</SharesShouldBeRounded></InstanceReport>
