GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Total goodwill	$ 309,505,000	$ 309,505,000	$ 309,505,000
Goodwill impairment	0	0
Impairment expense	$ 0	$ 0	$ 670,000
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]	Impairment expense	Impairment expense