Note 20 - Disclosures Regarding Fair Value (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets
Trading account assets	$ 10,114us-gaap_TradingSecurities	$ 5,513us-gaap_TradingSecurities
Investment securities available for sale
Available for sale securities fair value	211,968us-gaap_AvailableForSaleSecurities	211,511us-gaap_AvailableForSaleSecurities
Derivative financial instruments, assets	260us-gaap_DerivativeAssets	85us-gaap_DerivativeAssets
Total assets measured at fair value on a recurring basis	222,342us-gaap_AssetsFairValueDisclosure	217,109us-gaap_AssetsFairValueDisclosure
Liabilities
Derivative financial instruments, liabilities	44us-gaap_DerivativeLiabilities	18us-gaap_DerivativeLiabilities
US Government Agencies Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale
Available for sale securities fair value	3,235	3,965
US Government Agencies Debt Securities [Member]
Investment securities available for sale
Available for sale securities fair value	3,235	3,965
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale
Available for sale securities fair value	701	572
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale
Available for sale securities fair value	7,169	6,160
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale
Available for sale securities fair value	7,870	6,732
Collateralized Mortgage Obligations (Federal Agencies) [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale
Available for sale securities fair value	1,000
Collateralized Mortgage Obligations (Federal Agencies) [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale
Available for sale securities fair value	87,687	87,774
Collateralized Mortgage Obligations (Federal Agencies) [Member]
Investment securities available for sale
Available for sale securities fair value	88,687	87,774
Other Mortgage-Backed (Federal Agencies) [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale
Available for sale securities fair value	2,144
Other Mortgage-Backed (Federal Agencies) [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale
Available for sale securities fair value	76,824	78,503
Other Mortgage-Backed (Federal Agencies) [Member]
Investment securities available for sale
Available for sale securities fair value	78,968	78,503
SBA Loan-Backed (Federal Agencies) [Member] \| Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale
Available for sale securities fair value	18,796	19,675
SBA Loan-Backed (Federal Agencies) [Member] \| Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale
Available for sale securities fair value	14,412	14,862
SBA Loan-Backed (Federal Agencies) [Member]
Investment securities available for sale
Available for sale securities fair value	33,208	34,537
Fair Value, Inputs, Level 1 [Member]
Assets
Trading account assets	2,094	1,397
Investment securities available for sale
Total assets measured at fair value on a recurring basis	24,735	21,644
Fair Value, Inputs, Level 2 [Member]
Assets
Trading account assets	8,020	4,116
Investment securities available for sale
Derivative financial instruments, assets	260	85
Total assets measured at fair value on a recurring basis	197,607	195,465
Liabilities
Derivative financial instruments, liabilities	$ 44	$ 18

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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

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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, after the effects of master netting arrangements, of a financial liability or 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 liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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