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Note 2 - Investment Securities (Details) | Jun. 30, 2014 | Dec. 31, 2013
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Investment In Available For Sale Securities Disclosure [Abstract] |  |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 11 | 11
Unrealized Holding Losses Depreciation Percentage from Amortized Cost | 1.90% | 3.20%

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- Definition Unrealized holding losses depreciation percentage from amortized cost. + References No definition available. + Details
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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