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Note 8 - Notes Payable (Details Textual) - USD ($) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 20, 2022 | Aug. 20, 2022 | Jun. 20, 2021 | Feb. 20, 2021 | Dec. 30, 2020 | Sep. 25, 2020 | Aug. 21, 2020 | Aug. 11, 2020 | Aug. 03, 2020 | Jun. 20, 2020 | May 18, 2020 | May 07, 2020 | Apr. 28, 2020 | Mar. 27, 2020 | Dec. 19, 2019 | Jun. 30, 2014 | Jan. 31, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | May 02, 2016
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 |  |
Proceeds from Paycheck Protection Program Under CARES Act |  |  |  |  |  |  |  |  |  |  |  | $ 491,493 |  |  |  |  |  |  |  |  |  |
Payments for (Proceeds from) Deposit on Loan |  |  |  |  |  |  |  |  |  |  | $ 159,899 |  |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |  | $ 15,000,000 |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,949,199 |  | $ 9,431,157 |  |
RBL Capital Group, LLC [Member] | RBL Loan Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term (Month) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 months |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,000,000 |  |  |  |  |  | $ 15,000,000
RBL Capital Group, LLC [Member] | RBL Loan Agreement [Member] | Prime Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.65% |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Loan Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13.90% |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Term (Month) |  |  |  |  |  |  |  |  |  | 20 months |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Lines of Credit, Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |
Long-term Debt, Gross |  |  |  |  |  |  |  |  |  | $ 9,431,157 |  |  |  |  | $ 9,431,157 |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 14.19% |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Total |  |  |  |  |  |  |  |  |  | 137,109 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid |  |  |  |  |  |  |  |  |  | 3,290,475 |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  |  |  |  |  |  |  | 894,311 |  |  |  |  |  |  |  |  |  |  |  |
Payments of Debt Issuance Costs |  |  | $ 25,000 | $ 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note [Member] | Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments of Debt Issuance Costs | $ 750,000 | $ 94,311 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note [Member] | Debt Instrument, Redemption, Period One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Interest |  |  |  |  |  |  |  |  |  | 67,746 |  |  |  |  | $ 117,329 |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note [Member] | Debt Instrument, Redemption, Period Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 111,523 |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Total |  |  |  |  |  |  |  |  |  | $ 5,540,128 |  |  |  |  |  |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note [Member] | Debt Instrument, Redemption, Period Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 258,620 |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note, One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 14.19% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 4,431,157 |  |  |  |  |  |  |  |  |  |  |  |
RBL Capital Group, LLC [Member] | RBL Term Note, Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 14.19% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Periodic Payment, Interest |  |  |  |  |  |  |  |  |  | $ 59,125 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Priority Payment Systems LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  |  |  |  |  | $ 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |

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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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