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Note 5 - Loans (Details) - Loans Modified and Classified as TDR $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 USD ($) | Sep. 30, 2014
Financing Receivable, Modifications [Line Items] |  |  |  |
Number | 0 | 0 | 1 | 0
Balance |  |  | $ 41 |
Small Business Administration Portfolio Segment [Member] | Interest Rate Below Market Reduction [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number |  |  | 1 |
Balance |  |  | $ 41 |

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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=49124121&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=49124121&loc=SL6953676-111524 + Details
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