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Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Impaired loans by class |  |
Recorded Investment | $ 3,576 | $ 3,870
Related Allowance | 987 | 968
Unpaid Principal Balance | 3,764 | 4,844
Commercial loans secured by real estate [Member] |  |
Impaired loans by class |  |
Recorded Investment | 3,576 | 3,870
Unpaid Principal Balance | 3,764 | 4,844
Impaired Loans with Specific Allowance [Member] |  |
Impaired loans by class |  |
Recorded Investment | 3,076 | 2,836
Related Allowance | 987 | 968
Impaired Loans with Specific Allowance [Member] | Commercial loans secured by real estate [Member] |  |
Impaired loans by class |  |
Recorded Investment | 3,076 | 2,836
Related Allowance | 987 | 968
Impaired Loans with no Specific Allowance [Member] |  |
Impaired loans by class |  |
Recorded Investment | 500 | 1,034
Impaired Loans with no Specific Allowance [Member] | Commercial loans secured by real estate [Member] |  |
Impaired loans by class |  |
Recorded Investment | $ 500 | $ 1,034

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524 + Details
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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524 + Details
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