Note 11 - Restrictions on Dividends (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]
Proceeds from Dividends Received	$ 7,853us-gaap_ProceedsFromDividendsReceived	$ 7,782us-gaap_ProceedsFromDividendsReceived	$ 7,639us-gaap_ProceedsFromDividendsReceived
Period of Restriction on Retained Net Income Without Prior Approval	2 years
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval	$ 30,300

Period of restrictions on banking or savings institution's ability to pay dividends.

No definition available.

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- Details

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- Definition

Dividends received on equity and other investments during the current period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

+ Details

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- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(e))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph e

-Article 4

+ Details

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