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 - Additional Information (Details)

v3.19.3

Related Party Transactions - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 18, 2019	Jan. 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Revenue - from a related party			$ 280,000	$ 5,000	$ 1,683,000	$ 525,000
Payments of Loan Costs					79,000	404,000
Long-term Debt			$ 89,742,000		$ 89,742,000		$ 84,406,000
Debt Instrument, Interest Rate, Stated Percentage			2.50%		2.50%
Annual Management Services Agreement Fee Income Expense Written Off		$ 1,000,000
Opus Credit Facility [Member]
Related Party Transaction [Line Items]
Line Of Credit Facility, Prepayment Amount	$ 500,000
Common Shares Issued For Opus Debt, In Shares	396,825
Common Shares Issued For Opus Debt, Issue Price	$ 1.26
Payments of Loan Costs					$ 300,000	300,000
Long-term Debt			$ 9,000,000		$ 9,000,000		$ 9,500,000
Debt Instrument, Interest Rate, Stated Percentage			12.00%		12.00%
Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Interest own in percent by principal stockholder or director			11.70%		11.70%
Executives Vice Chairman [Member]
Related Party Transaction [Line Items]
Interest own in percent by principal stockholder or director			13.40%		13.40%
Shared Services Agreement [Member] \| TG Therapeutics, Inc [Member]
Related Party Transaction [Line Items]
Revenue - from a related party			$ 100,000	$ 200,000	$ 300,000	$ 1,200,000
Due from Related Parties, Current			100,000		100,000
Desk Share Agreements [Member]
Related Party Transaction [Line Items]
Payments for Rent			700,000
Desk Share Agreements [Member] \| TG Therapeutics, Inc [Member]
Related Party Transaction [Line Items]
Revenue - from a related party			400,000
Due from Related Parties, Current			200,000		200,000
Desk Share Agreements [Member] \| OPPM [Member]
Related Party Transaction [Line Items]
Revenue - from a related party			24,000
Due from Related Parties, Current			$ 400,000		$ 400,000

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