INCOME TAXES - Schedule of components of the income tax expense (benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Current:
Federal	$ 61,879	$ 22,951	$ (4,904)
State and local	15,724	7,766	7,676
Total current	77,603	30,717	2,772
Deferred:
Federal	(16,035)	(6,022)	22,901
State and local	(5,423)	(2,557)	493
Total deferred	(21,458)	(8,579)	23,394
Income tax expense	$ 56,145	$ 22,138	$ 26,166