INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Loss Carryforwards [Line Items]
Income taxes paid, net	$ 7,146	$ 479
Effective income tax rate reconciliation, GILTI, amount	0
Uncertain tax position	1,861
Acquired foreign net operating losses	2,222
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards allowance	4,618	0
Operating loss carryforwards	23,927
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards allowance	11,757	$ 10,354
Operating loss carryforwards	44,412
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Loss carryforwards which expires	67,591
Operating loss carry forward indefinitely	$ 21,911