Note 6 - Other Borrowed Funds (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, Maturities Summary, Fixed Rate	$ 20,858,000
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	2.10%
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	175,993,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	116,535,000
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	211,195,000
Commercial Loan [Member]
Note 6 - Other Borrowed Funds (Details) [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	77,638,000
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
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	$ 38,600,000	$ 29,500,000

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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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Describes the weighted average interest rate applicable to the specific 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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Amount of Federal Home Loan Bank (FHLB) advances which have fixed interest.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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