Note 6 - Other Borrowed Funds (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate	$ 24,109,000
Federal Home Loan Bank, Advances, Maturities Summary, Floating Rate	0
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	176,455,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	109,346,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months	$ 75,000,000
Debt, Weighted Average Interest Rate	1.44%	1.38%
Notes Payable, Related Parties	$ 360
Federal Home Loan Bank Advances [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Capital Lease Obligations	106,000	$ 117,000
Residential Mortgage [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	218,299,000
Commercial Loan [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	80,271,000
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
Minimum [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	1.34%
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Maximum [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	3.31%
Debt Instrument, Interest Rate, Stated Percentage	1.50%
Weighted Average [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Interest Rate	2.09%
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	$ 43,000,000	$ 34,800,000

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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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Contractual interest rate for funds borrowed, under the debt agreement.

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

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