FAIR VALUE MEASUREMENT - Schedule of Fair Value Hierarchy of The Company’s Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
ASSETS
Short-term investments:	$ 36,884	$ 74,700
Long-term investments:	11,410	1,304
Total assets at fair value	48,294	76,004
Liabilities:
Acquisition-related contingent consideration	0	7,976
Total liabilities at fair value		7,976
U.S. Treasury
ASSETS
Short-term investments:	3,836	40,254
Long-term investments:		1,304
Commercial paper
ASSETS
Short-term investments:	15,984
Corporate Debt Securities
ASSETS
Short-term investments:	17,064	34,446
Long-term investments:	11,410
Quoted Prices in Active Markets (Level 1)
ASSETS
Short-term investments:	0	40,254
Long-term investments:	0	1,304
Total assets at fair value	0	41,558
Liabilities:
Acquisition-related contingent consideration		0
Total liabilities at fair value		0
Quoted Prices in Active Markets (Level 1) | U.S. Treasury
ASSETS
Short-term investments:	0	40,254
Long-term investments:		1,304
Quoted Prices in Active Markets (Level 1) | Commercial paper
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
Significant Other Observable Inputs (Level 2)
ASSETS
Short-term investments:	36,884	34,446
Long-term investments:	11,410	0
Total assets at fair value	48,294	34,446
Liabilities:
Acquisition-related contingent consideration		7,976
Total liabilities at fair value		7,976
Significant Other Observable Inputs (Level 2) | U.S. Treasury
ASSETS
Short-term investments:	3,836	0
Long-term investments:		0
Significant Other Observable Inputs (Level 2) | Commercial paper
ASSETS
Short-term investments:	15,984
Significant Other Observable Inputs (Level 2) | Corporate Debt Securities
ASSETS
Short-term investments:	17,064	34,446
Long-term investments:	11,410
Significant Unobservable Inputs (Level 3)
ASSETS
Short-term investments:	0	0
Long-term investments:	0	0
Total assets at fair value	0	0
Liabilities:
Acquisition-related contingent consideration		0
Total liabilities at fair value		0
Significant Unobservable Inputs (Level 3) | U.S. Treasury
ASSETS
Short-term investments:	0	0
Long-term investments:		0
Significant Unobservable Inputs (Level 3) | Commercial paper
ASSETS
Short-term investments:	0
Significant Unobservable Inputs (Level 3) | Corporate Debt Securities
ASSETS
Short-term investments:	0	$ 0
Long-term investments:	$ 0