Fortress Biotech, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Related Party Transactions (Narrative) (Details)

v3.22.2.2

Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	May 11, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Operating lease term		7 years 6 months 29 days		7 years 6 months 29 days
Revenue from TGTX		$ 48	$ 29	$ 118	$ 252
Total notes payable		91,165		91,165		$ 42,937
Interest expense, interest		2,839	3,724	$ 7,397	7,770
Checkpoint [Member]
Related Party Transaction [Line Items]
Paid in Kind dividend as a percentage of fully diluted outstanding capitalization				0.00%
Avenue [Member]
Related Party Transaction [Line Items]
Paid in Kind dividend as a percentage of fully diluted outstanding capitalization				0.00%
Journey [Member]
Related Party Transaction [Line Items]
Proceeds from Related Party Agreement		$ 7,000,000		$ 100
Chief Executive Officer (Dr. Rosenwald) [Member]
Related Party Transaction [Line Items]
Interest own in percent by principal stockholder or director		10.70%		10.70%
Executive Vice Chairman [Member]
Related Party Transaction [Line Items]
Interest own in percent by principal stockholder or director		11.40%		11.40%
Shared Services Agreement [Member] \| TGTX [Member]
Related Party Transaction [Line Items]
Revenue from TGTX		$ 100	100	$ 700	300
Desk Share Agreements [Member] \| TGTX [Member] \| New York, NY Office Space [Member]
Related Party Transaction [Line Items]
Revenue from TGTX		500	400	1,400	1,200
Related party transaction, receivables		0		0
Total payment for rent		$ 800	$ 700	$ 2,200	$ 2,100
Stock Contribution Agreement [Member] \| Avenue [Member]
Related Party Transaction [Line Items]
Percentage of common and preferred shares to be transferred to partner company.	100.00%
Minimum proceeds required for closing of equity financing	$ 7,500
Percentage of partner company shares to be repurchased by partner company in stock contribution agreement	100.00%

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