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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Restructured Loans that Defaulted during Reporting Period (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 5 | 4 | 6 | 4
Principal Balance | $ 941 | $ 891 | $ 1,134 | $ 891
Impairment Accrued | 0 | 21 | 0 | 21
Consumer Real Estate [Member] | Residential closed end first liens [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 1 | 2 | 1 | 2
Principal Balance | 74 | 123 | 74 | 123
Impairment Accrued | 0 | 0 | 0 | 0
Consumer Real Estate [Member] | Residential closed end junior liens [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 1 | 1 | 1 | 1
Principal Balance | 60 | 93 | 60 | 93
Impairment Accrued | 0 | 0 | 0 | 0
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 2 | 1 | 3 | 1
Principal Balance | 670 | 675 | 863 | 675
Impairment Accrued | 0 | 21 | 0 | 21
Commercial Non Real Estate [Member] | Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 1 | 0 | 1 | 0
Principal Balance | 137 | 0 | 137 | 0
Impairment Accrued | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Represents the amount of investment in troubled debt restructures within the previous 12 months, for which there was a payment default that exceeds fair value, as determined by the impairment measurement. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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