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Note 7 - Long-term Debt - Long-term Debt (Details) (Parentheticals) - Debt Instruments, Excluding Paycheck Protection Program Liability [Member] | 9 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Sep. 30, 2021
Vendor Loan [Member] |  |
Interest rate | 3.00% | 3.00%
Maturity date | Mar. 01, 2023 | Mar. 01, 2023
Term Loans, One [Member] |  |
Maturity date | Oct. 10, 2022 | Oct. 10, 2022
Term Loans, One [Member] | Minimum [Member] |  |
Interest rate | 0.99% | 0.99%
Term Loans, One [Member] | Maximum [Member] |  |
Interest rate | 1.50% | 1.50%
Term Loans, Two [Member] |  |
Interest rate | 1.30% | 1.30%
Maturity date | Jul. 31, 2028 | Jul. 31, 2028
Seller Note [Member] |  |
Interest rate | 4.00% | 4.00%

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