Note 6 - Other Borrowed Funds (Details) - USD ($)	9 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate	$ 20,238,000
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate, Range from	1.34%
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate, Range to	3.31%
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate	2.08%
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	$ 180,708,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	118,670,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months	$ 75,000,000
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.15%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	1.50%
Notes Payable, Related Parties	$ 0
Residential Mortgage [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	214,870,000
Commercial Loan [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	77,317,000
FHLB Stock [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	5,081,000
Federal Home Loan Bank Advances [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Capital Lease Obligations	128,000
FHLB Line of Credit [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	75,000,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	75,000,000
Letters of Credit Outstanding, Amount	$ 41,800,000	$ 29,500,000

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Maximum contractual interest rate for funds borrowed, under the debt agreement.

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Minimum contractual interest rate for funds borrowed, under the debt agreement.

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Discloses the lowest interest rate applicable to any of the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Discloses the highest interest rate applicable to any of the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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