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Note 1 - Summary of Significant Accounting Policies (Details) - Composition of Loan Portfolio | Dec. 31, 2015 | Dec. 31, 2014
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Note 1 - Summary of Significant Accounting Policies (Details) - Composition of Loan Portfolio [Line Items] |  |
% of Total Loans | 100.00% | 100.00%
Residential Portfolio Segment [Member] |  |
Note 1 - Summary of Significant Accounting Policies (Details) - Composition of Loan Portfolio [Line Items] |  |
% of Total Loans | 38.22% | 37.60%
Commercial Real Estate Portfolio Segment [Member] |  |
Note 1 - Summary of Significant Accounting Policies (Details) - Composition of Loan Portfolio [Line Items] |  |
% of Total Loans | 28.90% | 29.86%
Consumer Portfolio Segment [Member] |  |
Note 1 - Summary of Significant Accounting Policies (Details) - Composition of Loan Portfolio [Line Items] |  |
% of Total Loans | 18.89% | 18.42%
Commercial Portfolio Segment [Member] |  |
Note 1 - Summary of Significant Accounting Policies (Details) - Composition of Loan Portfolio [Line Items] |  |
% of Total Loans | 13.99% | 14.12%

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