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Note 11 - Related Party Transactions (Details Textual) - USD ($) |  |  |  |  |  |  | 1 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 30, 2020 | Sep. 25, 2020 | Aug. 21, 2020 | Aug. 11, 2020 | Apr. 28, 2020 | Mar. 27, 2020 | Jan. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Aug. 03, 2020
Due to Related Parties, Current, Total |  |  |  |  |  |  |  | $ 346,331 |  |  | $ 216,657 |  |
Long-term Debt, Gross |  |  |  |  |  |  |  | 9,109,098 |  |  | 10,082,549 |  |
Sale of Promissory Note, Periodic Purchase Amount |  |  |  |  |  | $ 148,000 |  |  |  |  |  |  |
Other Accrued Liabilities, Current |  |  |  |  |  |  |  | 249,783 |  |  | 2,186,197 |  |
Tranche from ESOUSA Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Other Accrued Liabilities, Current |  |  |  |  |  |  |  | 145,000 |  | $ 145,000 |  | $ 145,000 |
Esousa Holdings LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Promissory Note, Percent of Gross Proceeds of Equity Sale Used to Finance Purchase of Note |  |  |  |  |  | 88.00% |  |  |  |  |  |  |
Sale of Promissory Note, Periodic Purchase Amount |  |  |  |  |  | $ 148,000 |  |  |  |  |  |  |
Proceeds from Sale of Notes Payable |  |  |  |  | $ 143,000 | 148,000 |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 50,000 | 45,654 | 66,190 | 65,862 |  | 200,000 |  |  |  |  |  |
RBL Capital Group, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Sale of Notes Payable | $ 1,960,000 | $ 426,000 | $ 401,000 | $ 707,000 | $ 143,000 | 148,000 |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 200,000 |  |  |  |  |  |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | Tranche from ESOUSA Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Other Accrued Liabilities, Current |  |  |  |  |  |  |  |  |  |  | 2,000,000.0 |  |
Promissory Note Issued to RBL Capital Group [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |  | $ 15,000,000
Prime Portfolios, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Commissions |  |  |  |  |  |  |  | 18,000 | $ 18,000 |  |  |  |
Key Members of Management Owned Companies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Commissions |  |  |  |  |  |  |  | 782,000 | $ 186,000 |  |  |  |
Chief Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Due to Related Parties, Current, Total |  |  |  |  |  |  |  | $ 209,000 |  |  | $ 122,000 |  |

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- Definition The percent of gross proceeds of equity sale used to finance the purchase of the note in tranches under the sale of a promissory note. + References No definition available. + Details
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