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

Collaboration and Stock Purchase Agreements (Details)

v3.20.1

Collaboration and Stock Purchase Agreements (Details) - USD ($) $ in Millions	1 Months Ended				3 Months Ended
	Dec. 31, 2019	Feb. 08, 2019	Jan. 31, 2019	Jan. 30, 2019	Mar. 31, 2020	Nov. 12, 2018
Business Acquisition, Percentage of Voting Interests Acquired						33.30%
Business Combination, Contingent Consideration, Liability						$ 180.0
Caelum [Member]
Sale of Stock Percentage of Shares Transferred on Transaction				19.90%
Sale of Stock, Consideration Received on Transaction				$ 30.0
Alexion [Member]
Potential Additional Payments, Maximum			$ 500.0
Alexion [Member] \| Caelum [Member]
Initial contingent payments	$ 30.0
Additional upfront funding	20.0
Funding for additional equity interest	$ 60.0
Sales [Member] \| Avenue [Member]
Net sales threshold					$ 325.0
Sales After January 1. 2029 [Member] \| Avenue [Member]
Gross Profit Percentage To Net Sales					20.00%
Contingent Earn Out Payments Measurement Second Model					$ 1,500.0
Slab One [Member] \| Avenue [Member]
Gross Profit Percentage To Net Sales					10.00%
Slab One [Member] \| Sales [Member] \| Avenue [Member]
Net sales threshold					$ 400.0
Slab One [Member] \| Sales After January 1. 2029 [Member] \| Avenue [Member]
Net sales threshold					$ 100.0
Slab Two [Member] \| Avenue [Member]
Gross Profit Percentage To Net Sales					12.50%
Slab Two [Member] \| Sales [Member] \| Avenue [Member] \| Minimum
Net sales threshold					$ 400.0
Slab Two [Member] \| Sales [Member] \| Avenue [Member] \| Maximum
Net sales threshold					$ 500.0
Slab Three [Member] \| Avenue [Member]
Gross Profit Percentage To Net Sales					15.00%
Slab Three [Member] \| Sales [Member] \| Avenue [Member]
Net sales threshold					$ 500.0
SPMA [Member]
Business Combination, Consideration Transferred		$ 7.0
First Stage [Member] \| SPMA [Member]
Business Combination, Consideration Transferred		$ 31.5

- Definition

Additional upfront funding to be made under the agreement.

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