Note 10 - Fair Value Measurements (Detail) - Fair Value of Financial Assets and Liabililties Measure on Recurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets:
Securities Balance	$ 63,466	$ 69,207
Derivative Assets Balance	67	170
Liabilities:
Derivative Liabilities Balance	67	170
US Government Agency Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets:
Securities Balance	29,842	34,022
US Government Agency Securities [Member]
Assets:
Securities Balance	29,842	34,022
Mortgage-Backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets:
Securities Balance	21,984	27,149
Mortgage-Backed Securities [Member]
Assets:
Securities Balance	21,984	27,149
Municipal Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets:
Securities Balance	11,640	8,036
Municipal Securities [Member]
Assets:
Securities Balance	11,640	8,036
Fair Value, Inputs, Level 2 [Member]
Assets:
Securities Balance	63,466
Derivative Assets Balance	67	170
Liabilities:
Derivative Liabilities Balance	$ 67	$ 170

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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