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Commitments and Contingencies (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2023
Mar. 31, 2024
Dec. 31, 2022
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2023
Commitments and Contingencies [Line Items]            
Commercial batch release amount       $ 20.0    
Minimum [Member]            
Commitments and Contingencies [Line Items]            
Allowance for net working capital allowances remaining   $ 2.0        
Maximum [Member]            
Commitments and Contingencies [Line Items]            
Allowance for net working capital allowances remaining   5.5        
Prepaid Expenses and Other Current Assets [Member] | Paragraph Four Certification Notice Letter [Member]            
Commitments and Contingencies [Line Items]            
Legal costs   2,334.0        
Mayne Pharma Agreement [Member]            
Commitments and Contingencies [Line Items]            
Acquisition of net working capital     $ 12.1      
Working capital amounts           $ 5.5
Mayne Pharma Agreement [Member] | Minimum [Member]            
Commitments and Contingencies [Line Items]            
Incremental accrual for net working capital $ 2.0          
Population Council License Agreement [Member]            
Commitments and Contingencies [Line Items]            
Milestone payment         $ 20.0  
Population Council License Agreement [Member] | Annoveras [Member]            
Commitments and Contingencies [Line Items]            
Aggregate of milestone payments   40.0        
Chief Financial Officer [Member]            
Commitments and Contingencies [Line Items]            
Executive termination obligations   $ 169.0