Note 4 - Summary of Significant Accounting Policies (Details) - Valuation Assumptions - Fair Value, Inputs, Level 3 [Member] - $ / shares	6 Months Ended	12 Months Ended
Jun. 30, 2015	Dec. 31, 2014
Series 2023 PIK Note Derivative Liability [Member]
Note 4 - Summary of Significant Accounting Policies (Details) - Valuation Assumptions [Line Items]
Market price and estimated fair value of stock	$ 0.58	$ 0.73
Exercise price	$ 1.36	$ 1.36
Term (years)	8 years 29 days	8 years 211 days
Expected volatility	62.20%	52.00%
Risk-free interest rate	2.17%	2.08%
Series A PIK Note Derivative Liability [Member]
Note 4 - Summary of Significant Accounting Policies (Details) - Valuation Assumptions [Line Items]
Market price and estimated fair value of stock	$ 0.58	$ 0.73
Exercise price	$ 0.92	$ 0.92
Term (years)	3 years 62 days	3 years 302 days
Expected volatility	62.20%	52.00%
Risk-free interest rate	2.17%	2.08%

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- Definition

Agreed upon price for the exchange of the underlying asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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Risk-free interest rate assumption used in valuing an instrument.

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Price of a single share of a number of saleable stocks of a company.

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