STOCKHOLDERS’ EQUITY - Schedule of RSU Activity (Details) - RSUs - $ / shares	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Number of Shares
Outstanding at beginning of period (in shares)	2,453,630	2,188,296	2,441,677
Granted (in shares)	1,692,656	1,439,138	1,101,925
Settled (in shares)	(848,308)	(731,212)	(665,635)
Canceled (in shares)	(371,136)	(442,592)	(689,671)
Outstanding at end of period (in shares)	2,926,842	2,453,630	2,188,296
Weighted- Average Fair Value Per Share
Outstanding at beginning of period (in dollars per share)	$ 11.25	$ 11.49	$ 12.29
Granted (in dollars per share)	8.94	11.13	10.24
Settled (in dollars per share)	11.46	11.13	11.33
Canceled (in dollars per share)	10.58	12.09	12.49
Outstanding at end of period (in dollars per share)	$ 9.94	$ 11.25	$ 11.49