Note 4 - Property and Equipment - Major Classes of Property and Equipment (Details) - USD ($) |
Jun. 30, 2026 |
Sep. 30, 2025 |
|---|---|---|
| Property and equipment, gross | $ 2,743,613 | $ 2,542,940 |
| Less accumulated depreciation | (2,408,773) | (2,265,563) |
| Property and equipment, net | 334,840 | 277,377 |
| Computers, Furniture, and Equipment [Member] | ||
| Property and equipment, gross | 1,934,706 | 1,758,805 |
| Manufacturing Equipment [Member] | ||
| Property and equipment, gross | 309,085 | 288,554 |
| Leasehold Improvements [Member] | ||
| Property and equipment, gross | $ 499,822 | $ 495,581 |
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, before accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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