Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Liquidity (Details Textual)

Note 2 - Liquidity (Details Textual) - USD ($)							1 Months Ended				3 Months Ended			6 Months Ended		10 Months Ended	12 Months Ended
Note 2 - Liquidity (Details Textual) - USD ($)	Aug. 12, 2021	Jul. 08, 2021	Mar. 02, 2021	Feb. 23, 2021	Aug. 31, 2020	May 18, 2020	Aug. 12, 2021	Jan. 31, 2020	Dec. 31, 2019	Nov. 30, 2017	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2019	Dec. 31, 2020	Aug. 30, 2020
Common Stock, Par or Stated Value Per Share (in dollars per share)											$ 0.001			$ 0.001		$ 0.001		$ 0.001
Proceeds from Issuance of Common Stock								$ 812,000	$ 1,900,000					$ 2,133	$ 3,025,040		$ 1,100,000
Stock Issued During Period, Shares, New Issues (in shares)									2,100,000
Stock Issued During Period, Value, New Issues											$ 1,800,000		$ 700,000
Stock Subscriptions and Other Receivables											2,400,238			2,400,238		$ 2,400,238		$ 2,987,319
Proceeds from Notes Payable, Total														0	366,000
Gain (Loss) on Extinguishment of Debt, Total											0		0	366,000	$ 0
Paycheck Protection Program CARES Act [Member]
Proceeds from Notes Payable, Total						$ 366,000
Gain (Loss) on Extinguishment of Debt, Total				$ 366,000
Series D Preferred Stock [Member]
Stock Issued During Period, Value, New Issues												$ 250,001
Stock Subscriptions and Other Receivables											$ 2,200,000			$ 2,200,000		$ 2,200,000
Series E Preferred Stock [Member]
Stock Issued During Period, Value, New Issues												$ 4,980,709
Subsequent Event [Member] \| Series E Preferred Stock [Member]
Conversion of Stock, Shares Converted (in shares)	0
Keystone Capital Partners, LLC [Member] \| Series D Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)					150,000											72,500
Stock Issued During Period, Value, New Issues					$ 15,000,000.0
Stock Purchase Agreement, Shares Remaining (in shares)											77,500			77,500		77,500
Keystone Capital Partners, LLC [Member] \| Series D Preferred Stock [Member] \| Maximum [Member]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)					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)		22,077
Stock Issued During Period, Value, New Issues		$ 2,200,000
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			$ 5,000,000.0
Preferred Stock, Convertible, Shares Issuable (in shares)			2,173,913
Private Placement [Member]
Stock Issued During Period, Value, New Issues													$ 520,030
Private Placement [Member] \| Mastiff Group LLC [Member]
Sale of Stock, Commitment Amount											$ 4,975,000			$ 4,975,000		$ 4,975,000		$ 4,975,000	$ 25,000,000.0
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						$ 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