Fortress Biotech, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Debt and Interest (Narrative) - 2024 Oaktree Note (Details)

Debt and Interest (Narrative) - 2024 Oaktree Note (Details)		1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2026 USD ($)	Jul. 31, 2024 USD ($)	Sep. 30, 2026 USD ($)	Mar. 31, 2026 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Feb. 28, 2026 USD ($)	Dec. 31, 2025 USD ($)
Debt and Interest
Total notes payable								$ 54,494,000
Repayment of Oaktree Note and debt issuance costs					$ 29,601,000	$ 5,636,000
Loss on extinguishment of debt					1,009,000
Unamortized debt discount fees								3,622,000
2024 Oaktree Note
Debt and Interest
Debt instrument face amount	$ 50,000,000		$ 50,000,000		50,000,000
Proceeds from debt		$ 35,000,000
Debt instrument, unused borrowing capacity, amount		$ 15,000,000
Total notes payable								29,494,000
Repayment of Oaktree Note and debt issuance costs	15,600,000			$ 15,000,000
Loss on extinguishment of debt	$ 1,000,000		$ 1,000,000		$ 1,000,000
Basis spread on variable rate		7.625%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]		us-gaap:SecuredOvernightFinancingRateSofrMember
Debt instrument, floor rate		2.5
Debt instrument, cap rate		5.75
Interest rate	11.35722%		11.35722%		11.35722%
Unamortized debt discount fees								$ 2,649,000
Reduction in debt covenants \| Second Oaktree Amendment
Debt and Interest
Minimum liquidity amount				$ 2,000,000			$ 2,000,000
Loan due on September 30, 2027 \| 2024 Oaktree Note
Debt and Interest
Debt instrument, percentage of then outstanding principal balance due on a specified date	12.50%		12.50%		12.50%
Loan due on December 30, 2027 \| 2024 Oaktree Note
Debt and Interest
Debt instrument, percentage of then outstanding principal balance due on a specified date	12.50%		12.50%		12.50%
Loan due on March 31, 2028 \| 2024 Oaktree Note
Debt and Interest
Debt instrument, percentage of then outstanding principal balance due on a specified date	37.50%		37.50%		37.50%
Maximum \| Reduction in debt covenants \| Second Oaktree Amendment
Debt and Interest
Total notes payable							15,000,000
Maximum \| Debt covenant no longer apply \| Second Oaktree Amendment
Debt and Interest
Total notes payable							$ 10,000,000