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GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($)	9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Total goodwill	$ 297,928,000	$ 309,505,000	$ 309,505,000	$ 309,505,000
Impairment expense	$ 0	$ 0

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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