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FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Sep. 30, 2025
--- | --- | ---
Assets: |  |
Short-term investments: | $ 14,953 | $ 38,858
Long-term investments: | 1,713 | 3,464
Total assets at fair value | 16,666 | 42,322
Commercial paper |  |
Assets: |  |
Short-term investments: | 998 | 19,575
U.S. Government and agency securities, short-term |  |
Assets: |  |
Short-term investments: |  | 998
Corporate debt securities |  |
Assets: |  |
Short-term investments: | 13,955 | 18,285
Long-term investments: | 1,713 | 3,464
Quoted Prices in Active Markets (Level 1) |  |
Assets: |  |
Short-term investments: | 0 | 0
Long-term investments: | 0 | 0
Total assets at fair value | 0 | 0
Quoted Prices in Active Markets (Level 1) | Commercial paper |  |
Assets: |  |
Short-term investments: | 0 | 0
Quoted Prices in Active Markets (Level 1) | U.S. Government and agency securities, short-term |  |
Assets: |  |
Short-term investments: |  | 0
Quoted Prices in Active Markets (Level 1) | Corporate debt securities |  |
Assets: |  |
Short-term investments: | 0 | 0
Long-term investments: | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Short-term investments: | 14,953 | 38,858
Long-term investments: | 1,713 | 3,464
Total assets at fair value | 16,666 | 42,322
Significant Other Observable Inputs (Level 2) | Commercial paper |  |
Assets: |  |
Short-term investments: | 998 | 19,575
Significant Other Observable Inputs (Level 2) | U.S. Government and agency securities, short-term |  |
Assets: |  |
Short-term investments: |  | 998
Significant Other Observable Inputs (Level 2) | Corporate debt securities |  |
Assets: |  |
Short-term investments: | 13,955 | 18,285
Long-term investments: | 1,713 | 3,464
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Short-term investments: | 0 | 0
Long-term investments: | 0 | 0
Total assets at fair value | 0 | 0
Significant Unobservable Inputs (Level 3) | Commercial paper |  |
Assets: |  |
Short-term investments: | 0 | 0
Significant Unobservable Inputs (Level 3) | U.S. Government and agency securities, short-term |  |
Assets: |  |
Short-term investments: |  | 0
Significant Unobservable Inputs (Level 3) | Corporate debt securities |  |
Assets: |  |
Short-term investments: | 0 | 0
Long-term investments: | $ 0 | $ 0

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