STOCKHOLDERS’ EQUITY - Performance RSU Activity (Details) - Performance RSUs	9 Months Ended
	Jun. 30, 2024 $ / shares shares
Number of Shares
Outstanding at beginning of period (in shares) | shares	730,393
Granted (in shares) | shares	818,587
Settled (in shares) | shares	(232,969)
Canceled (in shares) | shares	(436,413)
Outstanding at end of period (in shares) | shares	879,598
Weighted-Average Fair Market Value Per Share
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 13.37
Granted (in dollars per share) | $ / shares	11.12
Settled (in dollars per share) | $ / shares	10.11
Canceled (in dollars per share) | $ / shares	13.40
Outstanding at end of period (in dollars per share) | $ / shares	$ 12.12