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Debt (Details)
$ in Thousands
3 Months Ended
Apr. 17, 2023
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2024
Pharmakon Advisors, LP        
Debt Instrument [Line Items]        
Debt instrument capitalized interest rate 0.50      
Debt Instrument, SOFR floor 0.0175      
Debt instrument, basis spread on variable rate 7.00%      
Pharmakon Advisors, LP | PIK Interest Payment is Made        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate 7.25%      
Pharmakon Advisors, LP | Line of Credit        
Debt Instrument [Line Items]        
Debt instrument, periodic payment   $ 25,000    
Debt instrument, prepayment fee, percentage of principal voluntary payments   3.00%    
Pharmakon Advisors, LP | Line of Credit | Between the Second and Third Anniversaries        
Debt Instrument [Line Items]        
Debt instrument, prepayment fee, percentage of principal voluntary payments   3.00%    
Pharmakon Advisors, LP | Line of Credit | After Fourth Anniversary        
Debt Instrument [Line Items]        
Debt instrument, prepayment fee, percentage of principal voluntary payments   1.00%    
Pharmakon Advisors, LP | Line of Credit | After Third Anniversary        
Debt Instrument [Line Items]        
Debt instrument, prepayment fee, percentage of principal voluntary payments   2.00%    
Athyrium | Senior Credit Facility        
Debt Instrument [Line Items]        
Repayments of lines of credit $ 241,787      
Term Loan Tranche A | Pharmakon Advisors, LP | Line of Credit        
Debt Instrument [Line Items]        
Debt instrument, face amount     $ 300,000  
Proceeds from issuance of long-term debt   $ 300,000    
Debt instrument, term 18 months      
Effective interest rate   12.31%   13.34%
Interest expense, debt, total   $ 9,153 9,974  
Periodic payment, interest     4,987  
Fair value   323,704 318,650  
Debt instrument, unamortized discount (premium) and debt issuance costs, net, total   11,147    
Amortization of debt issuance costs   $ 544 $ 266  
Term Loan Tranche A | Pharmakon Advisors, LP | Line of Credit | PIK Interest Payment is Made        
Debt Instrument [Line Items]        
Percent of interest payment     0.50  
Loan Agreement | Pharmakon Advisors, LP        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 450,000      
Proceeds from issuance of long-term debt 25,805      
Term Loan Tranche B | Pharmakon Advisors, LP | Line of Credit        
Debt Instrument [Line Items]        
Debt instrument, face amount 50,000      
Term Loan Tranche C | Pharmakon Advisors, LP | Line of Credit        
Debt Instrument [Line Items]        
Debt instrument, face amount 50,000      
Term Loan Tranche D | Pharmakon Advisors, LP | Line of Credit        
Debt Instrument [Line Items]        
Debt instrument, face amount $ 50,000