Note 3 - Earnings (Loss) Per Share (Details Textual) - $ / shares	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Weighted Average Number of Shares Outstanding, Basic	145,868,227	96,645,482
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	43,775,016	27,356,310
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 0.15
Lower Range Limit [Member]
Debt Instrument, Convertible, Conversion Price	0.25
Upper Range Limit [Member]
Debt Instrument, Convertible, Conversion Price	0.50
Lower Range Limit [Member]
Investment Warrants, Exercise Price	0.25
Upper Range Limit [Member]
Investment Warrants, Exercise Price	0.60
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	0.045
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 0.24

Exercise price of the warrants.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column A

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
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The price per share of the conversion feature embedded in the debt instrument.

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-Name Accounting Standards Codification
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-SubTopic 20
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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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