INCOME TAXES - Narrative (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Income Tax Examination [Line Items]
Effective income tax reconciliation percentage	26.80%	26.20%	28.00%
Valuation allowance	$ 2,314	$ 5,557	$ 4,960
Unrecognized tax benefits	1,186	900	$ 780
Unrecognized tax benefits that would impact effective tax rate	1,200	900
Domestic Tax Authority
Income Tax Examination [Line Items]
Operating loss carryforwards, subject to expiration	0
State and Local Jurisdiction
Income Tax Examination [Line Items]
Operating loss carryforwards, subject to expiration	82,400
Valuation allowance	$ 2,300	$ 5,600