INCOME TAXES - Schedule of Provision of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Domestic	$ 14,418	$ 10,246	$ 23,836
Foreign	(2,809)	(11,155)	(13,495)
Income (loss) before income taxes	11,609	(909)	10,341
Current:
Federal	(10,217)	(6,323)	(4,414)
State	(906)	(420)	(1,215)
Foreign	(1,266)	495	(1,023)
Total current benefit (provision) for income taxes	(12,389)	(6,248)	(6,652)
Deferred:
Federal	6,128	4,291	(659)
State	548	397	819
Foreign	2,900	5,747	4,178
Total deferred benefit (provision) for income taxes	9,576	10,435	4,338
Total tax benefit (provision)	$ (2,813)	$ 4,187	$ (2,314)