STOCKHOLDERS’ EQUITY - Performance RSU Activity (Details) - Performance RSUs	9 Months Ended
	Jun. 30, 2025 $ / shares shares
Number of Shares
Outstanding at beginning of period (in shares) | shares	699,458
Granted (in shares) | shares	1,563,154
Settled (in shares) | shares	0
Canceled (in shares) | shares	(150,885)
Outstanding at end of period (in shares) | shares	2,111,727
Weighted-Average Fair Market Value Per Share
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 12.82
Granted (in dollars per share) | $ / shares	8.60
Settled (in dollars per share) | $ / shares	0
Canceled (in dollars per share) | $ / shares	14.20
Outstanding at end of period (in dollars per share) | $ / shares	$ 9.44