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