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Note 5 - Note Payable (Details Textual) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 28, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 27, 2018
Proceeds from Notes Payable, Total |  | $ 300,000 |  |  |
Interest Expense, Total |  | 2,590 |  |  |
Term Notes [Member] |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | $ 250,000
Common Stock Purchase Warrants [Member] |  |  |  |  |
Warrants and Rights Outstanding, Term | 5 years |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 178,571 |  |  |  |
Warrants issued to two current investors [Member] |  |  |  |  |
Warrants and Rights Outstanding, Term |  |  |  |  | 3 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  | 10,000,000
Senior Notes [Member] |  |  |  |  |
Debt Instrument, Term | 5 years |  |  |  |
Proceeds from Notes Payable, Total | $ 50,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.00% |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months | $ 10,420 |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Two | 12,500 |  |  |  |
Long-term Debt, Maturities, Repayments of Principal after Year Five | 2,080 |  |  |  |
Interest Expense, Total |  | $ 2,083 |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Three | 12,500 |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Five | $ 12,500 |  |  |  |

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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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