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Loans Nonaccrual Loans (Details) (USD $) | Sep. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2012
--- | --- | --- | ---
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | $ 17,912,000 | $ 19,150,000 | $ 23,573,000
Commercial Real Estate [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 3,996,000 | 4,603,000 | 5,200,000
Commercial Real Estate Construction Financing Receivable [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 62,000 | 101,000 | 3,546,000
Commercial Other [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 2,542,000 | 3,459,000 | 3,030,000
Municipal [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 0 | 0 | 0
Residential Term [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 10,279,000 | 10,333,000 | 10,745,000
Residential Construction [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 0 | 0 | 23,000
Home Equity [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 1,033,000 | 654,000 | 1,028,000
Consumer Loan [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | $ 0 | $ 0 | $ 1,000

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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5111-111524 + Details
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