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Note 6 - Stockholders' Deficit (Details Textual)				3 Months Ended			6 Months Ended		12 Months Ended
Note 6 - Stockholders' Deficit (Details Textual)	Jul. 17, 2020 shares	Apr. 03, 2020 shares	May 15, 2019	Jun. 30, 2020 USD ($) $ / shares shares	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($) $ / shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2019 USD ($) $ / shares shares	Dec. 31, 2018 $ / shares shares	Dec. 31, 2019 $ / shares shares
Preferred Stock, Shares Authorized (in shares) \| shares				2,000,000			2,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares				$ 0.001			$ 0.001
Dividends, Preferred Stock, Total \| $				$ 60,000	$ 60,000	$ 6,575	$ 120,000	$ 6,575
Class Of Warrant Or Right Expense Recognized \| $				0		37,691	0	126,810
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total \| $				0			0
Stock Option Plan [Member]
Share-based Payment Arrangement, Expense \| $				$ 0		$ 4,385	$ 0	10,963
Warrants Expiring January 25, 2024 [Member]
Share-based Payment Arrangement, Expense \| $								$ 104,638
Class of Warrant or Right, Issued During Period (in shares) \| shares								500,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares						$ 0.15		$ 0.15
Warrants and Rights Outstanding \| $						$ 44,670		$ 44,670
Class of Warrant or Right Numbero of Securities Cancelled (in shares) \| shares								7,935,000
Convert 2018 Promissory Note to Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage							12.00%
Series A Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares) \| shares				500			500			500
Preferred Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares				$ 0.001			$ 0.001			$ 0.001
Series B Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares) \| shares				3,000			3,000			3,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share) \| $ / shares				$ 0.001			$ 0.001			$ 0.001
Series B Preferred Stock [Member] \| Asset Purchased Agreement with Emerging Growth LLC [Member]
Preferred Stock, Dividend Rate, Percentage			6.00%				6.00%
Advisory Board Member [Member]
Stock Issued During Period, Shares, Issued for Services (in shares) \| shares		500,000
Restricted Stock Vested in Period (in shares) \| shares		250,000
Restricted Stock [Member] \| Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) \| shares									240,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) \| $ / shares									$ 0.50
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Vesting, Number of Equal Quarterly Increments									4
Share-based Payment Arrangement, Expense \| $						$ 30,000		$ 60,000
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount \| $				$ 0			$ 0
Restricted Stock [Member] \| Advisory Board Member [Member]
Share-based Payment Arrangement, Expense \| $				$ 4,632			$ 4,632
Restricted Stock [Member] \| Advisory Board Member [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares) \| shares	187,500