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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 |

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