Note 15 - Employee Equity Incentive Plans (Details) - Stock Option Activity (USD $)	6 Months Ended	12 Months Ended
Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Option Activity [Abstract]
Number of shares		3,130,000	5,745,000	10,452,500
Weighted average exercise price (per share)		$ 0.20	$ 0.29	$ 0.36
Weighted average remaining contractual term (in years)		1 year 215 days	1 year 255 days	1 year 248 days
Aggregate intrinsic value		$ 364,900	$ 93,945	$ 149,598
Vested and exercisable at December 31, 2014		2,855,000
Vested and exercisable at December 31, 2014		$ 0.21
Vested and exercisable at December 31, 2014		1 year 127 days
Vested and exercisable at December 31, 2014		$ 332,850
Number of shares		150,000	350,000
Weighted average exercise price (per share)		$ 0.16	$ 0.17
Number of shares	(11,000)	(150,000)	(100,000)
Weighted average exercise price (per share)		$ 0.13	$ 0.18
Number of shares		(2,615,000)	(4,957,500)
Weighted average exercise price (per share)		$ 0.40	$ 0.42

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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)

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

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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.

+ References

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-Publisher FASB

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-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-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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-Publisher FASB

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-SubTopic 10

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

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No definition available.

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

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

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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