DEBT - Schedule of long-term debt (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Sep. 30, 2024
DEBT
Total debt before unamortized debt issuance costs	$ 408,983	$ 405,289
Less: Debt issuance costs not amortized	(9,443)	(11,950)
Total debt, net of unamortized debt issuance costs	399,540	393,339
Less: Current portion	(7,146)	(3,538)
Total Long-term debt	392,394	389,801
Seller Note – Bolder BioPath (Related party)
DEBT
Total debt before unamortized debt issuance costs	263	376
Seller Note – Preclinical Research Services
DEBT
Total debt before unamortized debt issuance costs	0	464
Seller Payable - Orient BioResource Center
DEBT
Total debt before unamortized debt issuance costs	3,235	3,700
Seller Note – Histion (Related party)
DEBT
Total debt before unamortized debt issuance costs	12	84
Second Lien Notes
DEBT
Total debt before unamortized debt issuance costs	20,485	17,846
Convertible Senior Notes
DEBT
Total debt before unamortized debt issuance costs	113,124	109,979
Term Loan Facility, DDTL and Incremental Term Loans
DEBT
Total debt before unamortized debt issuance costs	$ 271,864	$ 272,840

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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