Note 9 - Stock Option Plan (Details) - Stock Option Activity (Stock Option Plan 1999 [Member], USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Stock Option Plan 1999 [Member]
Note 9 - Stock Option Plan (Details) - Stock Option Activity [Line Items]
Outstanding at January 1, 2014	46,000
Outstanding at January 1, 2014	$ 23.96
Exercised	(2,500)
Exercised	$ 23.00
Forfeited or expired	(23,000)
Forfeited or expired	$ 24.93
Outstanding at December 31, 2014	20,500
Outstanding at December 31, 2014	$ 23.00
Outstanding at December 31, 2014	310 days
Outstanding at December 31, 2014	$ 151
Exercisable at December 31, 2014	20,500
Exercisable at December 31, 2014	$ 23.00
Exercisable at December 31, 2014	310 days
Exercisable at December 31, 2014	$ 151

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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.

+ 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 (c)(1)(iii)

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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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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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-SubTopic 10

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-Subparagraph (c)(1)(iv)(3)-(4)

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Weighted average price of options that were either forfeited or expired.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-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 option holders acquired shares when converting their stock options into shares.

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

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-Publisher SEC

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-Number 210

-Section 04

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