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DEBT - Significant Transactions Narrative (Details) - USD ($)			12 Months Ended
	Sep. 13, 2024	Oct. 12, 2022	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023	Nov. 27, 2021
DEBT
Long-term debt, Carrying value			$ 402,123,000	$ 393,339,000
Gain (loss) on extinguishment of debt			$ 0	$ 1,860,000	$ 0
Senior Secured Second Lien PIK Notes Due 2027 \| Secured Debt
DEBT
Annual interest rate	15.00%
Convertible Senior Notes
DEBT
Debt, principal amount						$ 140,000,000
the Purchasers
DEBT
Shares to be purchased (in shares)	3,946,250
the Purchasers \| Senior Secured Second Lien PIK Notes Due 2027 \| Secured Debt
DEBT
Cash proceeds from debt acquired	$ 17,000,000
the Purchasers \| Convertible Senior Notes \| Convertible Debt
DEBT
Debt acquired	8,333,000
Annual interest rate						3.25%
Long-term debt, Carrying value	131,667
Gain (loss) on extinguishment of debt	$ 1,860,000
Structuring Agent
DEBT
Shares to be purchased (in shares)	200,000
Structuring Agent \| Senior Secured Second Lien PIK Notes Due 2027 \| Secured Debt
DEBT
Debt, principal amount	$ 550,000
New Delayed Draw Term Loan
DEBT
Borrowings on delayed draw term loan		$ 35,000,000