Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments (USD $)	Mar. 31, 2015	Dec. 31, 2014
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Cash and due from banks	$ 22,744,354us-gaap_CashAndDueFromBanks	$ 23,281,016us-gaap_CashAndDueFromBanks
Interest-bearing deposits in other banks	36,897,107us-gaap_InterestBearingDepositsInBanks	32,835,661us-gaap_InterestBearingDepositsInBanks
Securities available for sale	272,483,000us-gaap_AvailableForSaleSecurities	292,299,000us-gaap_AvailableForSaleSecurities
Securities held to maturity	507,595us-gaap_HeldToMaturitySecurities	507,309us-gaap_HeldToMaturitySecurities
Loans held for sale	7,947,333us-gaap_LoansReceivableHeldForSaleNet	4,792,943us-gaap_LoansReceivableHeldForSaleNet
Loans and leases HFI, net, less impaired loans	481,472,896	472,916,300
Stock in FHLB of Atlanta	796,800us-gaap_FederalHomeLoanBankStock	606,500us-gaap_FederalHomeLoanBankStock
Accrued interest receivable	2,741,677us-gaap_InterestReceivable	2,851,650us-gaap_InterestReceivable
Bank-owned life insurance	15,252,228us-gaap_BankOwnedLifeInsurance	15,125,498us-gaap_BankOwnedLifeInsurance
Financial liabilities:
Deposits	784,024,745us-gaap_Deposits	788,280,370us-gaap_Deposits
Forward Contracts [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member] \| Estimate of Fair Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Interest rate swap	(509,000)	(405,000)
Forward Contracts [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest Rate Swap [Member] \| Reported Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Interest rate swap	(509,000)	(405,000)
Fair Value, Inputs, Level 1 [Member] \| Estimate of Fair Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Cash and due from banks	22,744,000	23,281,000
Interest-bearing deposits in other banks	36,897,000	32,836,000
Securities available for sale	31,659,000	31,232,000
Fair Value, Inputs, Level 1 [Member] \| Reported Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Cash and due from banks	22,744,000	23,281,000
Interest-bearing deposits in other banks	36,897,000	32,836,000
Securities available for sale	31,659,000	31,232,000
Fair Value, Inputs, Level 2 [Member] \| Estimate of Fair Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Securities available for sale	240,824,000	261,067,000
Securities held to maturity	514,000	512,000
Loans held for sale	7,947,000	4,793,000
Loans and leases HFI, net, less impaired loans	470,133,000	460,062,000
Stock in FHLB of Atlanta	797,000	607,000
Accrued interest receivable	2,742,000	2,852,000
Bank-owned life insurance	15,252,000	15,125,000
Financial liabilities:
Deposits	784,257,000	788,488,000
Junior subordinated debentures	10,310,000	10,310,000
Fair Value, Inputs, Level 2 [Member] \| Reported Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Securities available for sale	240,824,000	261,067,000
Securities held to maturity	508,000	507,000
Loans held for sale	7,947,000	4,793,000
Loans and leases HFI, net, less impaired loans	463,089,000	453,436,000
Stock in FHLB of Atlanta	797,000	607,000
Accrued interest receivable	2,742,000	2,852,000
Bank-owned life insurance	15,252,000	15,125,000
Financial liabilities:
Deposits	784,025,000	788,280,000
Junior subordinated debentures	10,310,000	10,310,000
Fair Value, Inputs, Level 3 [Member] \| Estimate of Fair Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Impaired loans HFI, net	18,384,000	19,480,000
Mortgage servicing rights	2,229,000	2,347,000
Fair Value, Inputs, Level 3 [Member] \| Reported Value Measurement [Member]
Note 11 - Fair Value of Financial Instruments (Details) - Financial Instruments [Line Items]
Impaired loans HFI, net	18,384,000	19,480,000
Mortgage servicing rights	$ 1,160,000	$ 1,178,000

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Amount classified as loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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