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Loans Nonaccrual Loans (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2012
--- | --- | --- | ---
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | $ 20,924 | $ 19,150 | $ 24,438
Commercial Real Estate [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 4,599 | 4,603 | 7,160
Commercial Real Estate Construction Financing Receivable [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 1,045 | 101 | 946
Commercial Other [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 3,152 | 3,459 | 2,634
Municipal [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 0 | 0 | 0
Residential Term [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 11,098 | 10,333 | 10,893
Residential Construction [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 0 | 0 | 1,454
Home Equity [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | 1,030 | 654 | 1,336
Consumer Loan [Member] |  |  |
Schedule of Financing Receivables [Line Items] |  |  |
Nonaccrual loans | $ 0 | $ 0 | $ 15

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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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