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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Restructurings that Occurred during Reporting Peiod (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 | 2 | 5 | 4 | 8
Pre-Modification Outstanding Principal Balance | $ 474 | $ 1,428 | $ 4,128 | $ 1,595
Post-Modification Outstanding Principal Balance | 483 | 1,319 | 4,222 | 1,505
Impairment Accrued | 10 | 197 | 10 | 244
Consumer Real Estate [Member] | Residential closed end first liens [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 1 | 2 | 1 | 4
Pre-Modification Outstanding Principal Balance | 212 | 201 | 212 | 351
Post-Modification Outstanding Principal Balance | 216 | 146 | 216 | 310
Impairment Accrued | 3 | 0 | 3 | 47
Consumer Real Estate [Member] | Residential closed end junior liens [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 1 | 1 | 1 | 1
Pre-Modification Outstanding Principal Balance | 262 | 147 | 262 | 147
Post-Modification Outstanding Principal Balance | 267 | 93 | 267 | 93
Impairment Accrued | 7 | 0 | 7 | 0
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts |  | 1 | 1 | 2
Pre-Modification Outstanding Principal Balance |  | 680 | 154 | 697
Post-Modification Outstanding Principal Balance |  | 680 | 239 | 702
Impairment Accrued |  | 21 | 0 | 21
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts |  |  | 1 |
Pre-Modification Outstanding Principal Balance |  |  | 3,500 |
Post-Modification Outstanding Principal Balance |  |  | 3,500 |
Impairment Accrued |  |  | 0 |
Commercial Non Real Estate [Member] | Commercial and Industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts |  | 1 |  | 1
Pre-Modification Outstanding Principal Balance |  | 400 |  | 400
Post-Modification Outstanding Principal Balance |  | 400 |  | 400
Impairment Accrued |  | $ 176 |  | $ 176

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- Definition Represents the amount of investment in troubled debt restructures that exceeds fair value, as determined by the impairment measurement, as of the end of the period. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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