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Note 2 - Investment Securities (Details)	Jun. 30, 2014	Dec. 31, 2013
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.

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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

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