Note 8 - Debt (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Dec. 30, 2024 |
Mar. 05, 2018 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Sep. 30, 2025 |
|
| Payment for Debt Extinguishment or Debt Prepayment Cost | $ (0) | $ 4,221,611 | |||||
| Gain (Loss) on Extinguishment of Debt | $ 0 | $ 0 | 0 | $ 8,624,778 | |||
| Credit Agreement [Member] | |||||||
| Debt Instrument, Face Amount | $ 10,000,000 | ||||||
| Long-Term Debt | $ 0 | ||||||
| Residual Royalty Financing Agreement [Member] | |||||||
| Royalty Agreement, Payment, Percentage | 5.00% | ||||||
| Payment for Debt Extinguishment or Debt Prepayment Cost | $ 4,200,000 | ||||||
| Gain (Loss) on Extinguishment of Debt | $ 8,600,000 | ||||||
| Residual Royalty Financing Agreement [Member] | Scenario, Change of Control or Sale of Business [Member] | |||||||
| Royalty Agreement, Payment, Percentage | 5.00% | ||||||
| Royalty Agreement, Payment to Agent | $ 2,000,000 | ||||||
| Credit Agreement and Residual Royalty Financing Agreement [Member] | |||||||
| Debt Instrument, Face Amount | $ 10,000,000 | ||||||
| Premium Finance Agreement [Member] | |||||||
| Accrued Liabilities and Other Liabilities | $ 0 | $ 0 | $ 0 | ||||
| X | ||||||||||
- Definition Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other. No definition available.
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| X | ||||||||||
- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Represents the royalty payment as a percentage of net sales. No definition available.
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| X | ||||||||||
- Definition Represents the amount to be paid to the agent. No definition available.
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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