DEBT - Schedule of long-term debt (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Sep. 30, 2025
DEBT
Total debt before unamortized debt issuance costs	$ 413,586	$ 411,699
Less: Debt issuance costs not amortized	(7,813)	(9,576)
Total debt, net of unamortized debt issuance costs	405,773	402,123
Less: Current portion	(405,773)	(402,123)
Total Long-term debt	0	0
Seller Note – Bolder BioPath (Related party)
DEBT
Total debt before unamortized debt issuance costs	94	150
Seller Payable - Orient BioResource Center
DEBT
Total debt before unamortized debt issuance costs	3,235	3,235
Second Lien Notes
DEBT
Total debt before unamortized debt issuance costs	24,694	23,220
Convertible Senior Notes
DEBT
Total debt before unamortized debt issuance costs	118,168	116,440
Term Loan Facility, DDTL and Incremental Term Loans
DEBT
Total debt before unamortized debt issuance costs	$ 267,395	$ 268,654