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Note 4 - Fair Value Measurements (Details) - Assets Measured on a Recurring Basis (USD $) | Mar. 31, 2014 | Dec. 31, 2013
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Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | $ 155,940,000 | $ 157,143,000
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 25,905,000 | 25,763,000
US Government Agencies Debt Securities [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 25,905,000 | 25,763,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 88,359,000 | 88,614,000
US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 88,359,000 | 88,614,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 37,444,000 | 38,323,000
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 37,444,000 | 38,323,000
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 3,476,000 | 3,693,000
Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 3,476,000 | 3,693,000
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 155,184,000 | 156,393,000
Debt Securities [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 155,184,000 | 156,393,000
Equity Securities in Financial Institutions [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 5,000 | 5,000
Equity Securities in Financial Institutions [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 751,000 | 745,000
Equity Securities in Financial Institutions [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 756,000 | 750,000
Fair Value, Inputs, Level 1 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 5,000 | 5,000
Fair Value, Inputs, Level 2 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | 155,935,000 | 157,138,000
Fair Value, Inputs, Level 3 [Member] |  |
Assets measured on a recurring basis: |  |
Assets Measured on a Recurring Basis | $ 0 | $ 0

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- Definition Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 + Details
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