XML 35 R24.htm IDEA: XBRL DOCUMENT
v3.25.1

Note 3 - Short-term Investments (Tables) | 6 Months Ended
--- | ---
Mar. 31, 2025
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | As of March 31, 2025 |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 9,281 |  |  | $ | — |  |  | $ | (2 | ) |  | $ | 9,279 |
U.S. treasury securities and securities of U.S. government-sponsored agency |  |  | 2,250 |  |  |  | 2 |  |  |  | — |  |  |  | 2,252 |
Total |  | $ | 11,531 |  |  | $ | 2 |  |  | $ | (2 | ) |  | $ | 11,531 |
|  | As of September 30, 2024 |
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 21,814 |  |  | $ | 35 |  |  | $ | — |  |  | $ | 21,849 |
U.S. treasury securities and securities of U.S. government-sponsored agency |  |  | 8,356 |  |  |  | 22 |  |  |  | — |  |  |  | 8,378 |
Total |  | $ | 30,170 |  |  | $ | 57 |  |  | $ | — |  |  | $ | 30,227 |

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration