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Note 1 -Summary of Significant Accounting Policies (Details) | 12 Months Ended
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Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares | Dec. 31, 2013 USD ($) shares
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Number of Branches | 10 |  |
Goodwill, Impairment Loss | $ 0 | $ 0 | $ 0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options | $ 0 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in Shares) | shares | 2,175 | 11,223 |
Payments for Stock Options Exercised | $ 7,000 | $ 50,000 | 77,000
Employee Stock Option [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Allocated Share-based Compensation Expense | $ 0 | $ 0 | $ 0
Restricted Stock [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in Shares) | shares | 585 | 0 | 0
Core Deposits [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |  |
Minimum [Member] | Furniture, Fixtures, and Equipment [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
Minimum [Member] | Building and Building Improvements [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
Maximum [Member] | Furniture, Fixtures, and Equipment [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 20 years |  |
Maximum [Member] | Building and Building Improvements [Member] |  |  |
Note 1 -Summary of Significant Accounting Policies (Details) [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |

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