Note 13 - Stock Option Plan (Details) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 13 - Stock Option Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	20,000	20,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	29,825	32,775
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	115,800	128,225	156,275
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options (in Dollars)	$ 86,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	25 months
The 1998 Plan [Member]
Note 13 - Stock Option Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	220,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	225,058
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	30,444
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	164,814
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	29,800
The 2005 Plan [Member]
Note 13 - Stock Option Plan (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	200,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	143,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	45,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	12,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	86,000

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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Unrecognized cost of unvested options awarded to employees as compensation.

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No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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For presentations that combine terminations, 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 or that expired.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Number of share options (or share units) exercised during the current period.

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