Note 3 - Liquidity (Details Textual) - USD ($)		1 Months Ended							4 Months Ended	12 Months Ended		36 Months Ended
	Apr. 23, 2021	Jun. 30, 2021	Jan. 31, 2021	Nov. 30, 2020	Jun. 30, 2020	Apr. 30, 2020	Feb. 29, 2020	Jan. 31, 2020	Apr. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2017
Net Income (Loss) Attributable to Parent, Total										$ (8,272,517)	$ (4,434,759)	$ (20,000,000)
Proceeds from Issuance of Convertible Preferred Stock										0	1,500,000
Proceeds from Issuance of Preferred Stock and Preference Stock										3,000,000	5,426,601
Proceeds from Sale of Buildings										3,500,000	0
Long-term Debt, Total										6,921,487	8,622,580	$ 6,921,487
Lake Barrington Facility Lease [Member]
Lessee, Operating Lease, Term of Contract (Year)	10 years
Lessee, Operating Lease, Annual Base Rent on First Year	$ 500,000
Lessee, Operating Lease, Annual Base Rent on Last Year	652,386
Lake Barrington Facility [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Disposal Group, Including Discontinued Operation, Consideration	3,500,000
Proceeds from Sale of Buildings	2,000,000
Financing Receivable, before Allowance for Credit Loss, Total	1,500,000
Common Stock [Member]
Stock Issued During Period, Value, New Issues											15,000
Convertible Preferred Stock [Member]
Stock Issued During Period, Value, New Issues											5,426,601
Convertible Preferred Stock [Member] | Common Stock [Member]
Stock Issued During Period, Value, New Issues											$ 333,334
Stock Issued During Period, Shares, New Issues (in shares)											400,000
Series B Preferred Stock [Member]
Stock Issued During Period, Value, New Issues										1,612,707
Preferred Stock, Convertible, Conversion Price (in dollars per share)				$ 1.00
Stock Issued During Period, Shares, New Issues (in shares)				170,000
Proceeds from Issuance of Preferred Stock and Preference Stock				$ 1,500,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)				$ 10.00
Series C Preferred Stock [Member]
Stock Issued During Period, Value, New Issues										1,500,000
Preferred Stock, Convertible, Conversion Price (in dollars per share)			$ 1.00
Stock Issued During Period, Shares, New Issues (in shares)			170,000
Proceeds from Issuance of Preferred Stock and Preference Stock			$ 1,500,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)			$ 10.00
Series D Preferred Stock [Member]
Stock Issued During Period, Value, New Issues										$ 1,500,000
Preferred Stock, Convertible, Conversion Price (in dollars per share)										$ 1.00		$ 1.00
Preferred Stock, Par or Stated Value Per Share (in dollars per share)										$ 10		$ 10
Equity Financing Arrangement [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)											400,000
Equity Financing Arrangement [Member] | Convertible Preferred Stock [Member]
Value of Shares Issuable to Other Investor								$ 2,000,000
LF International Pte [Member] | Equity Financing Arrangement [Member]
Preferred Stock, Convertible, Conversion Price (in dollars per share)								$ 1
Proceeds from Issuance of Convertible Preferred Stock					$ 500,000	$ 1,300,000	$ 700,000	$ 2,500,000
LF International Pte [Member] | Equity Financing Arrangement [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)						260,000	140,000
LF International Pte [Member] | Equity Financing Arrangement [Member] | Convertible Preferred Stock [Member]
Stock Issued During Period, Value, New Issues								$ 5,000,000
Other Investor [Member] | Equity Financing Arrangement [Member] | Convertible Preferred Stock [Member]
Stock Issued During Period, Value, New Issues									$ 1,000,000
Unrelated Third Party [Member] | Series D Preferred Stock [Member]
Proceeds from Issuance of Convertible Preferred Stock		$ 1,500,000
Term Loan [Member]
Long-term Debt, Total										$ 559,140	$ 2,156,895	$ 559,140
PNC [Member] | PNC Agreements [Member] | Term Loan [Member]
Debt Instrument, Face Amount														$ 6,000,000
Long-term Debt, Total	$ 2,000,000
PNC [Member] | PNC Agreements [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity														$ 18,000,000
Line Financial [Member] | Line Financial Agreement [Member] | Term Loan [Member]
Debt Instrument, Face Amount													$ 731,250
Line Financial [Member] | Line Financial Agreement [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity													$ 6,000,000