Note 1 - Description of Business and Basis of Presentation (Details Textual) |
Aug. 04, 2025 |
Jun. 02, 2025 |
Apr. 11, 2025 |
Feb. 18, 2025 |
Sep. 17, 2024 |
Dec. 21, 2023 |
Aug. 11, 2023 |
May 04, 2023 |
Jun. 30, 2025
$ / shares
|
Sep. 30, 2024
$ / shares
|
Sep. 16, 2024
$ / shares
|
Nov. 05, 2021
$ / shares
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | |||||||||
| NASDAQ Required Closing Bid Price (in dollars per share) | $ 1 | |||||||||||
| Reverse Stock Split [Member] | ||||||||||||
| Stockholders' Equity Note, Stock Split, Conversion Ratio | 250 | 100 | 100 | 60 | 100 | 100 | 9 | 25 |