Note 3 - Loans and Allowance for Loan Losses (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans Pledged as Collateral	$ 484,000,000	$ 466,000,000
Loans and Leases Receivable, Gross	999,902,000	1,005,112,000
Impaired Financing Receivable, Related Allowance	4,102,000	5,143,000
Financing Receivable, Modifications, Number of Contracts	8	3
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	0	0
TDR Financing Receivable [Member] \| Real Estate Mortgage Residential [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Impaired Financing Receivable, Related Allowance		5,000
TDR Financing Receivable [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Impaired Financing Receivable, Related Allowance	2,700,000	2,900,000
Interest Rate As Modified [Member] \| Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.00%
Interest Rate As Modified [Member] \| Real Estate Mortgage Residential [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.125%
Interest Rate Original [Member] \| Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.25%
Interest Rate Original [Member] \| Real Estate Mortgage Residential [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.00%
TDR Financing Receivable [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Impaired, Commitment to Lend	0	0
Allowance for Loan and Lease Losses, Period Increase (Decrease)	37,000	442,000
Debt by Borrowers Discharged under Chapter Seven Bankruptcy [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts	7
Financing Receivable, Modifications, Recorded Investment	338,000
Real Estate Mortgage Farmland And Other Commercial Enterprises [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts		1
Real Estate Mortgage Residential [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Financing Receivable, Modifications, Number of Contracts		1
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	0	0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	15,000	72,000
Directors Executive Officers Principal Shareholders And Immediate Family Members [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) [Line Items]
Loans and Leases Receivable, Gross	$ 18,100,000

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Amount of increase (decrease) of allowance reserve for credit loss.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)

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

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Number of financing receivables that have been modified by troubled debt restructurings.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

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Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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Reflects the amount of the write-down related to a troubled debt restructuring.

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Amount of allowance for credit losses related to recorded investment.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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