Note 9 - Deposits (Details) - Interest Expense on Time Deposits (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Interest Expense on Time Deposits [Abstract]
Interest bearing demand	$ 1,229	$ 1,017	$ 792
Money market accounts	8,627	7,034	5,938
Saving accounts	802	374	365
Time deposits	35,111	31,964	40,278
Total	$ 45,769	$ 40,389	$ 47,373

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Aggregate amount of all interest expense on domestic deposit liabilities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.6)

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 6

-Article 9

+ Details

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- Definition

Amount of interest expense on domestic demand deposit liabilities.

+ References

+ Details

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- Definition

Amount of interest expense on domestic money market demand account deposit liabilities.

+ References

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- Definition

Amount of interest expense on domestic savings deposit liabilities.

+ References

+ Details

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- Definition

Amount of interest expense on time deposit liabilities.

+ References

+ Details

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