Note 6 - Other Loans Held for Sale (Details) - Change in Net Other Loans Held for Sale (SBA Loans [Member], Gross [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
SBA Loans [Member] \| Gross [Member]
Note 6 - Other Loans Held for Sale (Details) - Change in Net Other Loans Held for Sale [Line Items]
SBA loans transferred to other loans held for sale	$ 1,608	$ 1,166
Proceeds from sales of SBA loans	(1,731)	(1,236)
Gain on sale of SBA loans	$ 123	$ 70

The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Section 45

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-Subparagraph (b)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

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-Subparagraph (SX 210.9-04.13(h))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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