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Debt (Details)
3 Months Ended 9 Months Ended
Apr. 17, 2023
USD ($)
Dec. 07, 2020
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jul. 29, 2022
USD ($)
Debt Instrument [Line Items]              
Net proceeds from secured term loans         $ 300,000,000 $ 73,072,000  
Amortization of debt issuance costs         1,069,000 (597,000)  
Loss on extinguishment of debt     $ 0 $ 0 29,019,000 0  
Pharmakon Advisors, LP              
Debt Instrument [Line Items]              
Debt instrument capitalized interest rate 0.50            
Pharmakon Advisors, LP | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate              
Debt Instrument [Line Items]              
Debt Instrument, SOFR floor 0.0175            
Debt instrument, basis spread on variable rate 7.00%            
Pharmakon Advisors, LP | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | 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         $ 25,000,000    
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              
Debt Instrument [Line Items]              
Periodic payment, interest           $ 15,311  
Paid-in-kind interest         $ 8,476,000    
Athyrium | Senior Credit Facility              
Debt Instrument [Line Items]              
Repayments of lines of credit $ 241,787            
MidCap Financial Services, LLC | Senior Credit Facility              
Debt Instrument [Line Items]              
Repayments of lines of credit   $ 43,298,000          
Term Loan Tranche A | Pharmakon Advisors, LP | Line of Credit              
Debt Instrument [Line Items]              
Debt instrument, face amount 300,000,000            
Net proceeds from secured term loans $ 300,000       $ 300,000,000    
Debt instrument, term 18 months            
Effective interest rate     13.24%   13.24%    
Interest expense, debt, total         $ 17,350,000    
Periodic payment, interest         8,675,000    
Fair value     $ 308,675,000   308,675,000    
Debt instrument, unamortized discount (premium) and debt issuance costs, net, total     11,147,000   11,147,000    
Amortization of debt issuance costs     $ 230,000   467,000    
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 $ 450,000,000            
Net proceeds from secured term loans $ 25,805,000            
Credit Agreement | Athyrium              
Debt Instrument [Line Items]              
Debt instrument, face amount   $ 200,000,000          
Debt instrument, term 17 days            
Debt instrument, LIBOR floor   1.75%          
Debt instrument, LIBOR cap   3.50%          
Debt instrument, exit fee, percentage of principal   2.00%          
Debt instrument, commitment fee percentage   1.00%          
Long-term debt, total $ 240,452,000            
Interest expense 1,355            
Fee amount 17,261,000            
Deferred financing costs 11,758,000            
Loss on extinguishment of debt         $ 29,019,000    
Credit Agreement | Athyrium | Prior to the Second Anniversary              
Debt Instrument [Line Items]              
Debt instrument, prepayment fee, percentage of principal voluntary payments   102.00%          
Debt instrument, prepayment fee, percentage of accrued interest   0.50%          
Credit Agreement | Athyrium | Between the Second and Third Anniversaries              
Debt Instrument [Line Items]              
Debt instrument, prepayment fee, percentage of principal voluntary payments   2.00%          
Credit Agreement | Athyrium | Between the Third and Fourth Anniversaries              
Debt Instrument [Line Items]              
Debt instrument, prepayment fee, percentage of principal voluntary payments   1.00%          
Credit Agreement | Athyrium | After Fourth Anniversary              
Debt Instrument [Line Items]              
Debt instrument, prepayment fee, percentage of principal voluntary payments   0.00%          
Credit Agreement | Athyrium | London Interbank Offered Rate (LIBOR)              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate   8.25%          
Credit Agreement | Athyrium | London Interbank Offered Rate (LIBOR) | PIK Interest Payment is Made              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate   10.25%          
Credit Agreement | Athyrium | Term A Loan              
Debt Instrument [Line Items]              
Net proceeds from secured term loans   $ 125,000,000          
Credit Agreement | Athyrium | Term B Loan              
Debt Instrument [Line Items]              
Debt instrument, face amount             $ 25,000,000
Credit Agreement | Athyrium | Term C Loan              
Debt Instrument [Line Items]              
Debt instrument, face amount             50,000,000
Credit Agreement | Athyrium | Term B And C Loan              
Debt Instrument [Line Items]              
Debt instrument, face amount             $ 75,000,000
Credit Agreement | Athyrium | Term Loans              
Debt Instrument [Line Items]              
Effective interest rate     12.68%   12.68%    
Term Loan Tranche B | Pharmakon Advisors, LP | Line of Credit              
Debt Instrument [Line Items]              
Debt instrument, face amount 50,000,000            
Term Loan Tranche C | Pharmakon Advisors, LP | Line of Credit              
Debt Instrument [Line Items]              
Debt instrument, face amount 50,000,000            
Term Loan Tranche D | Pharmakon Advisors, LP | Line of Credit              
Debt Instrument [Line Items]              
Debt instrument, face amount $ 50,000,000