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Note 8 - Common Stock (Details Textual) - USD ($) | 1 Months Ended | 5 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2014 | Nov. 30, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Jun. 14, 2016 | Jun. 13, 2016
Common Stock, Shares Authorized |  |  | 300,000,000 | 150,000,000 |  | 300,000,000 | 150,000,000
Common Stock, Capital Shares Reserved for Future Issuance |  |  | 95,106,312 |  |  |  |
2006 Equity Incentive Plan [Member] |  |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  | $ 54,805 | $ 67,905 | $ 101,191 |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  | 1,705,500 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period |  |  | 10 years |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 3 years |  |  |  |
2006 Equity Incentive Plan [Member] | Incentive Stock Options (ISO's) [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent |  |  | 110.00% |  |  |  |
Equity Incentive Plan 2016 [Member] |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  | 3,000,000 |  |  |  |
Expense Associated with Warrant Modifications [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Warrants Exercised | 3,176,000 |  | 21,884,420 |  |  |  |
Proceeds from Warrant Exercises | $ 873,400 |  | $ 1,339,801 |  |  |  |
Third Party Consulting Services [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services |  | 378,205 |  |  |  |  |
Allocated Share-based Compensation Expense |  | $ 100,000 |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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