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Note 11 - Restrictions on Dividends (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Note 11 - Restrictions on Dividends (Details) [Line Items] |  |  |
Proceeds from Dividends Received | $ 7,782 | $ 7,639 | $ 7,258
Period of Restriction on Retained Net Income Without Prior Approval | 2 years |  |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval | 31,484 |  |
NBSF [Member] |  |  |
Note 11 - Restrictions on Dividends (Details) [Line Items] |  |  |
Proceeds from Dividends Received | $ 100 |  |

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- Definition Period of restrictions on banking or savings institution's ability to pay dividends. + References No definition available. + 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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