Note 14 - Employee Equity Incentive Plans (Details) - Stock Options Oustanding (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Strike Price Range Lower Limit		$ 0.045
Strike Price Range Upper Limit		$ 0.50
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Strike Price Range Lower Limit	$ 0.00	$ 0.00
Strike Price Range Upper Limit	$ 0.20	$ 0.20
Outstanding Stock Options (in Shares)	2,072,500	2,080,000
Weighted Average Remaining Contractual Life	1 year 266 days	1 year 357 days
Weighted Average Outstanding Strike Price	$ 0.13	$ 0.13
Vested Stock Options (in Shares)	1,872,500	1,855,000
Weighted Average Remianing Vested Life	1 year 6 months	1 year 262 days
Weighted Average Vested Strike Price	$ 0.12	$ 0.12
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Strike Price Range Lower Limit	$ 0.21	$ 0.21
Strike Price Range Upper Limit	$ 0.29	$ 0.29
Outstanding Stock Options (in Shares)	600,000	600,000
Weighted Average Remaining Contractual Life	248 days	335 days
Weighted Average Outstanding Strike Price	$ 0.24	$ 0.24
Vested Stock Options (in Shares)	550,000	550,000
Weighted Average Remianing Vested Life	164 days	251 days
Weighted Average Vested Strike Price	$ 0.25	$ 0.25
Range Three [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Strike Price Range Lower Limit	$ 0.30	$ 0.30
Strike Price Range Upper Limit	$ 0.49	$ 0.49
Outstanding Stock Options (in Shares)	100,000	0
Weighted Average Remaining Contractual Life	4 years 339 days	0 years
Weighted Average Outstanding Strike Price	$ 0.30	$ 0.00
Vested Stock Options (in Shares)	0	0
Weighted Average Remianing Vested Life	0 years	0 years
Weighted Average Vested Strike Price	$ 0.00	$ 0.00
Range Four [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Strike Price Range Lower Limit	$ 0.50	$ 0.50
Strike Price Range Upper Limit	$ 0.70	$ 0.70
Outstanding Stock Options (in Shares)	450,000	450,000
Weighted Average Remaining Contractual Life	156 days	248 days
Weighted Average Outstanding Strike Price	$ 0.50	$ 0.50
Vested Stock Options (in Shares)	450,000	450,000
Weighted Average Remianing Vested Life	156 days	248 days
Weighted Average Vested Strike Price	$ 0.50	$ 0.50
Range Five [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Strike Price Range Lower Limit	$ 0.00	$ 0.00
Strike Price Range Upper Limit	$ 0.70	$ 0.70
Outstanding Stock Options (in Shares)	3,222,500	3,130,000
Weighted Average Remaining Contractual Life	1 year 164 days	1 year 215 days
Weighted Average Outstanding Strike Price	$ 0.21	$ 0.20
Vested Stock Options (in Shares)	2,872,500	2,855,000
Weighted Average Remianing Vested Life	1 year 47 days	1 year 127 days
Weighted Average Vested Strike Price	$ 0.21	$ 0.21

As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(2)

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

+ References

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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-Name Accounting Standards Codification

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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