Note 4 - Derivative Obligations, Fair Value Assumptions (Details) - $ / shares		3 Months Ended
Aug. 31, 2015	Sep. 30, 2015
Series A Warrant [Member]
Market price of common stock (in dollars per share)	$ 0.68	$ 0.53
Expected volatility	72.00%	72.00%
Contractual term (years)	5 years 182 days	5 years 146 days
Discount rate	1.54%	1.40%
Dividend rate	0.00%	0.00%
Exercise price (in dollars per share)	$ 0.68	$ 0.68
Series B Warrant [Member]
Market price of common stock (in dollars per share)	$ 0.68	$ 0.53
Expected volatility	62.00%	57.00%
Contractual term (years)	1 year 182 days	1 year 146 days
Discount rate	0.57%	0.49%
Dividend rate	0.00%	0.00%
Exercise price (in dollars per share)	$ 0.68	$ 0.68

Agreed upon price for the exchange of the underlying asset.

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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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

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- Definition

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.

+ References

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- Definition

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

+ References

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ 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 (bbb)

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

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- Definition

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

+ References

No definition available.

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