REVENUE - Summary of Rebate Activity (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue From Contract With Customer [Roll Forward]
Beginning balance	$ 54,995	$ 72,741	$ 66,958	$ 56,542
Rebate expense	31,948	28,328	90,116	73,747
Rebate payments	(20,255)	(47,936)	(90,386)	(77,156)
Ending balance	$ 66,688	$ 53,133	$ 66,688	$ 53,133