Note 12 - Stock Based Compensation (Detail) - Stock Option Activity (USD $)			12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 2005 Stock Option Plan [Member]
Options Outstanding	459,690	463,100	463,100
Weighted Average Exercise Price (in Dollars per share)			$ 9.42
Weighted Average Contractual Term			3 years 135 days
Exercisable at December 31, 2012			459,690
Exercisable at December 31, 2012 (in Dollars per share)			$ 9.31
Exercisable at December 31, 2012			3 years 135 days
Forfeited			(3,410)
Forfeited (in Dollars per share)			$ 9.09
Options Outstanding	459,690	463,100	459,690
Weighted Average Exercise Price (in Dollars per share)			$ 9.31
Weighted Average Contractual Term			3 years 135 days

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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