Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Equity (Details Textual)

Note 12 - Equity (Details Textual) - USD ($)			1 Months Ended					3 Months Ended			7 Months Ended	8 Months Ended	12 Months Ended
Note 12 - Equity (Details Textual) - USD ($)	Mar. 02, 2021	Aug. 31, 2020	May 13, 2021	Aug. 31, 2020	Feb. 29, 2020	Jan. 31, 2020	Dec. 31, 2019	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Mar. 31, 2021	May 13, 2021	Dec. 31, 2020	Dec. 31, 2019	Aug. 30, 2020
Stock Issued During Period, Shares, New Issues (in shares)							2,100,000
Proceeds from Issuance of Common Stock						$ 812,000	$ 1,900,000	$ 13	$ 1,700,000	$ 850,000				$ 1,100,000
Common Stock, Share Subscribed but Unissued, Subscriptions Receivable								4,975,000			$ 4,975,000		$ 4,975,000
Proceeds from Issuance of Preferred Stock and Preference Stock								8,175,000
Preferred Stock, Shares Subscribed but Unissued, Subscriptions Receivable								$ 9,550,000			9,550,000		10,300,000
Stock Issued During Period, Value, New Issues										700,000
Stock Issued During Period, Shares, Employee Benefit Plan (in shares)								30,018
Stock Issued During Period, Value, Employee Benefit Plan								$ 76,846
Issuance of Stock to Defined Contribution Plan for Employer Matching Contribution								$ 76,846
Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)										1,000,001
Stock Issued During Period, Value, New Issues										$ 1,000
Stock Issued During Period, Shares, Employee Benefit Plan (in shares)								30,018
Stock Issued During Period, Value, Employee Benefit Plan								$ 30
Stock Issued During Period, Shares, Issued for Employee Bonuses (in shares)										53,315
Conversion from Series D Preferred Stock To Common Stock [Member]
Conversion of Stock, Shares Issued (in shares)								2,341,258
Series D Preferred Stock [Member]
Stock Subscriptions Receivable								$ 500,000			500,000
Preferred Stock, Shares Subscribed but Unissued, Subscriptions Receivable								9,600,000			$ 9,600,000
Stock Issued During Period, Value, New Issues								$ 250,001
Series D Preferred Stock [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)
Stock Issued During Period, Value, New Issues
Series C Preferred Stock [Member]
Conversion of Stock, Shares Converted (in shares)								49,500
Series E Preferred Stock [Member]
Stock Issued During Period, Value, New Issues								$ 4,980,709
Convertible Stock, Fixed Price Per Share (in dollars per share)								$ 2.30			$ 2.30
Preferred Stock, Redemption Price Per Share (in dollars per share)								$ 110			$ 110
Series E Preferred Stock [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)
Stock Issued During Period, Value, New Issues
Subsequent Event [Member] \| Conversion from Series D Preferred Stock To Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)			5,000
Conversion of Stock, Shares Issued (in shares)			316,725
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, Other				$ 15,000,000
Proceeds from Issuance of Preferred Stock and Preference Stock								3,200,000			$ 5,000,000		$ 2,925,000
Stock Issued During Period, Value, New Issues		$ 15,000,000
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
Percentage of Securities Allowed to be Purchased in Third-Party Offering, Maximum	33.33%
Private Placement [Member]
Stock Issued During Period, Value, New Issues
Private Placement [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)										902,162
Stock Issued During Period, Value, New Issues										$ 902
Private Placement [Member] \| Mastiff Group LLC [Member]
Sale of Stock, Commitment Amount								$ 4,975,000			$ 4,975,000				$ 25,000,000
Private Placement [Member] \| Mastiff Group LLC [Member] \| Subsequent Event [Member]
Proceeds from Issuance of Common Stock			$ 25,000
Investor [Member]
Stock Issued During Period, Shares, New Issues (in shares)					4,000,000
Proceeds from Issuance of Common Stock					$ 3,400,000
Employees [Member] \| Common Stock [Member]
Stock Issued During Period, Shares, Issued for Employee Bonuses (in shares)										53,315
Issuance of Stock to Defined Contribution Plan for Employer Matching Contribution										$ 65,000
Prepaid Expenses and Other Current Assets [Member]
Common Stock, Share Subscribed but Unissued, Subscriptions Receivable							$ 812,000							$ 812,000