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Note 10 - Stock-Based Compensation (Details) - Activity of Stock Option Plan (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Activity of Stock Option Plan [Abstract]
Number of Shares	1,197,044	1,069,141
Weighted Average Exercise Price	$ 3.79	$ 4.50
Weighted Average Remaing Contractual Term	6 years
Aggregate Intrinsic Value	$ 7,700
Exercisable at December 31, 2013	812,037
Exercisable at December 31, 2013	$ 5.29
Exercisable at December 31, 2013	4 years 109 days
Exercisable at December 31, 2013	$ 0
Granted	210,000
Granted	$ 0.52
Forfeited or expired	(82,097)
Forfeited or expired	$ 4.68

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

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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.

+ References

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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.

+ References

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-Publisher FASB

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

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

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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.

+ References

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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