INCOME TAXES - Schedule of Income Tax Provision Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Amount computed using statutory rate	$ (2,438)	$ 191	$ (2,172)
Net change in valuation allowance for net deferred tax assets	1,049	1,696	292
Foreign rate differential	47	439	504
Permanent differences	175	190	(14)
State income tax	(262)	(19)	(100)
Research and development credits	781	1,754	791
Contingent consideration	0	(28)	(432)
Uncertain tax positions	(220)	(93)	(184)
Stock compensation, net	(1,935)	(242)	(522)
Other	(10)	299	(477)
Total tax benefit (provision)	$ (2,813)	$ 4,187	$ (2,314)