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Recorded Investment in Nonperforming Loans by Class of Loans (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | $ 5,820 | $ 7,583
Loans 90+ Days Past Due Still Accruing | 292 | 289
Total Nonperforming Loans | 8,362 | 10,040
Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 1,974 | 2,370
Loans 90+ Days Past Due Still Accruing | 219 | 215
Total Nonperforming Loans | 5,923 | 6,600
Land |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 130 | 125
Loans 90+ Days Past Due Still Accruing | 11 | 0
Total Nonperforming Loans | 458 | 462
Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 260 | 403
Loans 90+ Days Past Due Still Accruing | 0 | 0
Total Nonperforming Loans | 111 | 284
Commercial Real Estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 1,406 | 2,836
Loans 90+ Days Past Due Still Accruing | 0 | 0
Total Nonperforming Loans | 637 | 695
Commercial Business |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 1,776 | 1,776
Loans 90+ Days Past Due Still Accruing | 0 | 0
Total Nonperforming Loans | 237 | 36
Home Equity and Second Mortgage |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 274 | 73
Loans 90+ Days Past Due Still Accruing | 53 | 56
Total Nonperforming Loans | 674 | 1,405
Other Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Nonaccrual Loans | 0 | 0
Loans 90+ Days Past Due Still Accruing | 9 | 18
Total Nonperforming Loans | 322 | 558
Nonperforming Financing Receivable |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 6,112 | 7,872
Nonperforming Financing Receivable | Residential |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 2,193 | 2,585
Nonperforming Financing Receivable | Land |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 141 | 125
Nonperforming Financing Receivable | Construction |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 260 | 403
Nonperforming Financing Receivable | Commercial Real Estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 1,406 | 2,836
Nonperforming Financing Receivable | Commercial Business |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 1,776 | 1,776
Nonperforming Financing Receivable | Home Equity and Second Mortgage |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | 327 | 129
Nonperforming Financing Receivable | Other Consumer |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Nonperforming Loans | $ 9 | $ 18

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + 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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- 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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- Definition Recorded Investment in financing receivables that are past due at 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 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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