Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Liquidity (Details Textual)

Note 2 - Liquidity (Details Textual) - USD ($)					1 Months Ended					3 Months Ended			7 Months Ended	8 Months Ended	12 Months Ended
Note 2 - Liquidity (Details Textual) - USD ($)	Mar. 02, 2021	Feb. 23, 2021	Aug. 31, 2020	May 18, 2020	May 13, 2021	Aug. 31, 2020	Jan. 31, 2020	Dec. 31, 2019	Nov. 30, 2017	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Mar. 31, 2021	May 13, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 30, 2020
Common Stock, Par or Stated Value Per Share (in dollars per share)										$ 0.001			$ 0.001		$ 0.001
Proceeds from Issuance of Common Stock							$ 812,000	$ 1,900,000		$ 13	$ 1,700,000	$ 850,000				$ 1,100,000
Stock Issued During Period, Shares, New Issues (in shares)								2,100,000
Stock Issued During Period, Value, New Issues												700,000
Proceeds from Issuance of Preferred Stock and Preference Stock										8,175,000
Paycheck Protection Program CARES Act [Member]
Proceeds from Notes Payable, Total				$ 366,000
Forgiveness of Notes Payable		$ 366,000
Series D Preferred Stock [Member]
Stock Issued During Period, Value, New Issues										250,001
Series E Preferred Stock [Member]
Stock Issued During Period, Value, New Issues										4,980,709
Keystone Capital Partners, LLC [Member] \| Series D Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)			150,000			150,000							49,500
Stock Issued During Period, Value, New Issues			$ 15,000,000
Proceeds from Issuance of Preferred Stock and Preference Stock										3,200,000			$ 5,000,000		$ 2,925,000
Keystone Capital Partners, LLC [Member] \| Series D Preferred Stock [Member] \| Maximum [Member]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)			5,147,000			5,147,000
Keystone Capital Partners, LLC [Member] \| Subsequent Event [Member] \| Series D Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)					5,000
Proceeds from Issuance of Preferred Stock and Preference Stock					$ 500,000									$ 5,500,000
John K. Scott, Jr. [Member] \| Series E Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)	50,000
Stock Issued During Period, Value, New Issues	$ 5,000,000
Preferred Stock Convertible Shares, Issuable (in shares)	2,173,913
Private Placement [Member]
Stock Issued During Period, Value, New Issues
Private Placement [Member] \| Mastiff Group LLC [Member]
Sale of Stock, Commitment Amount										4,975,000			$ 4,975,000				$ 25,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)																	$ 0.001
Private Placement [Member] \| Mastiff Group LLC [Member] \| Subsequent Event [Member]
Proceeds from Issuance of Common Stock					$ 25,000
Platinum-Montaur Life Sciences LLC Litigation [Member]
Loss Contingency, Damages Sought, Value									$ 1,900,000
CRG Loan Agreement, Ohio Case [Member]
Loss Contingency, Damages Sought, Value										$ 4,300,000