Note 1 - Basis of Presentation and Description of Business (Details Textual) - $ / shares |
Jun. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|---|---|---|---|
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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