Quarterly report pursuant to Section 13 or 15(d)

Related Party Agreements (Details)

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Related Party Agreements (Details) - Fortress Biotech, Inc - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Jul. 22, 2016
Mar. 31, 2020
Mar. 31, 2020
Mar. 31, 2019
Related Party Transaction [Line Items]        
Share of equity or debt financing used to calculate equity fee or stock issuance to maintain parity (as a percent) 2.50%      
Issuances Related To Debt Financing        
Related Party Transaction [Line Items]        
Share of equity or debt financing used to calculate equity fee or stock issuance to maintain parity (as a percent)   2.50%    
Issuance of common shares - Founders Agreement (in shares)   31,220    
Proceeds from issuance of common shares   $ 5.0    
Research and development        
Related Party Transaction [Line Items]        
Allocation of fees to income statement account (as a percent)     50.00% 50.00%
General and administrative        
Related Party Transaction [Line Items]        
Allocation of fees to income statement account (as a percent)     50.00% 50.00%
Expenses from related party transaction     $ 0.1