Quarterly report pursuant to Section 13 or 15(d)

Related Party Agreements (Narrative) (Details)

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Related Party Agreements (Narrative) (Details) - Fortress Biotech, Inc [Member] - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jan. 02, 2024
Jul. 22, 2016
Jan. 31, 2024
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Related Party Transaction [Line Items]            
Shares issued for services (in shares) 353,086          
Founders Agreement            
Related Party Transaction [Line Items]            
Debt financing occurred     $ 0   $ 0  
Issuance of common shares (in shares)     0   0  
Parent Company | Management Services Agreement (MSA)            
Related Party Transaction [Line Items]            
Percentage of annual fees expense related to Management Services Agreement recorded in research and development expenses       50.00% 50.00%  
Percentage of annual fees expense related to Management Services Agreement recorded in general and administrative expenses       50.00% 50.00%  
Expenses from related party transaction       $ 100 $ 100  
Parent Company | Founders Agreement            
Related Party Transaction [Line Items]            
Percentage of fully diluted equity 2.50% 2.50%        
Research and development for licenses acquired           $ 500