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v3.20.2

Note 19 - Subsequent Events (Details Textual) - USD ($) |  |  |  |  | 1 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 12, 2020 | Jul. 31, 2020 | Jul. 27, 2020 | Jul. 20, 2020 | Aug. 13, 2020 | Jul. 31, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Feb. 14, 2020 | Dec. 31, 2019 | Nov. 11, 2015
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  |  |  |  | $ 0.0001 |  |  | $ 0.0001 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.65 |  | $ 3.60
Repayments of Convertible Debt |  |  |  |  |  |  | $ 211,984 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Conversion of Warrant (in shares) | 475,500 | 211,000 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  | 29,130,000 |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  | $ 0.0001 |  |  |  |  |  |  |
Commissions and Fees, Percent of Gross Proceeds |  |  |  | 8.00% |  |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity, Total |  |  |  | $ 22,800,000 |  | $ 22,800,000 |  |  |  |  |
Repayments of Convertible Debt |  |  |  | 4,200,000 |  |  |  |  |  |  |
Common Stock Outstanding, Increase (Decrease) (in shares) |  |  |  |  | 38,214,500 |  |  |  |  |  |
Convertible Notes Payable, Total |  |  |  | 0 |  |  |  |  |  |  |
Subsequent Event [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Payments of Stock Issuance Costs |  |  |  | $ 80,000 |  |  |  |  |  |  |
Subsequent Event [Member] | Over-Allotment Option [Member] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  | 4,984,500 |  |  |  |  |  |  |
Subsequent Event [Member] | Pre-Funded Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Conversion of Warrant (in shares) |  |  | 4,100,000 |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  | 4,100,000 |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  | $ 0.01 |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  |  |  | 1 |  |  |  |  |  |  |
Subsequent Event [Member] | Common Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  | 33,230,000 |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  | $ 0.65 |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  |  |  | 1 |  |  |  |  |  |  |
Class of Warrant or Right, Issued During Period, Price Per Share (in dollars per share) |  |  |  | $ 0.65 |  |  |  |  |  |  |
Warrants and Rights Outstanding, Term (Year) |  |  |  | 5 years |  |  |  |  |  |  |
Subsequent Event [Member] | Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Issued During Period, Price Per Share (in dollars per share) |  |  |  | $ 0.64 |  |  |  |  |  |  |
Subsequent Event [Member] | Over Allotment Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding (in shares) |  |  |  | 4,984,500 |  |  |  |  |  |  |

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