STOCKHOLDERS’ EQUITY - Schedule of Performance RSU Activity (Details) - Performance RSUs - $ / shares	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Number of Shares
Outstanding at beginning of period (in shares)	699,458	730,393	919,456
Granted (in shares)	1,612,879	818,587	325,837
Settled (in shares)	0	(232,969)	(27,245)
Canceled (in shares)	(290,053)	(616,553)	(487,655)
Outstanding at end of period (in shares)	2,022,284	699,458	730,393
Weighted- Average Fair Market Value Per Share
Outstanding at beginning of period (in dollars per share)	$ 12.82	$ 13.37	$ 13.43
Granted (in dollars per share)	8.62	11.12	10.23
Settled (in dollars per share)	0	10.11	9.25
Canceled (in dollars per share)	12.70	12.24	11.61
Outstanding at end of period (in dollars per share)	$ 9.49	$ 12.82	$ 13.37