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Note 8 - Bridge Financing - Convertible Debentures (Details Textual)		3 Months Ended	6 Months Ended
	Jun. 26, 2020 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2020 USD ($) $ / shares
Convertible Debentures [Member]
Debt Instrument, Unamortized Discount, Total	$ 769,334
Interest Expense, Debt, Total		$ 5,703
Amortization of Debt Discount (Premium)		5,045
Interest Payable		$ 658	$ 658
June 2020 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares	2,400,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 0.50	$ 0.50	$ 0.50
Warrants and Rights Outstanding	$ 457,834
Convertible Debentures [Member]
Number of Institutional Investors	2
Proceeds from Convertible Debt, Gross	$ 1,050,000
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Debt Instrument, Face Amount	$ 1,200,000	$ 1,200,000	$ 1,200,000
Debt Instrument, Term (Month)	1 year
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares	$ 0.50
Gross Proceeds from Issuance of Common Stock, Public Offering	$ 6,000,000
Percentage of Offering Price	80.00%
Debt Instrument, Unamortized Discount, Total		$ 769,334	769,334
Payments of Debt Issuance Costs	$ 161,501
Debt Conversion, Original Debt Discount	$ 150,000
Amortization of Debt Discount (Premium)			$ 5,045
Convertible Debentures [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Redemption Price, Percentage	110.00%
Convertible Debentures [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument, Redemption Price, Percentage	120.00%

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