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Liability Related to Sale of Future Revenues - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Nov. 04, 2022
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   $ 50,641,000   $ 44,319,000 $ 106,544,000 $ 80,480,000
Interest expense related to sale of future revenues         3,749,000  
Interest paid     $ (5,700,000)   $ (5,653,000)  
NovaQuest Capital Management [Member] | Revenue Interest Financing Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Effective annual interest rate related to sale of future revenues         15.63%  
NovaQuest Capital Management [Member] | Revenue Interest Financing Agreement [Member] | Minimum [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Prepayment amount of 2024 to 2030 $ 80,000,000          
NovaQuest Capital Management [Member] | Revenue Interest Financing Agreement [Member] | Maximum [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Prepayment amount of 2024 to 2030 125,000,000          
NovaQuest Capital Management [Member] | Payment Period One [Member] | Revenue Interest Financing Agreement [Member] | Minimum [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Revenue interest payment 62,500,000          
NovaQuest Capital Management [Member] | Payment Cap Date on or before December 31, 2028 [Member] | Revenue Interest Financing Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Maximum payment cap amount 100,000,000          
NovaQuest Capital Management [Member] | Payment Cap Date on or after January 1, 2029 [Member] | Revenue Interest Financing Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Maximum payment cap amount 112,500,000          
NovaQuest Capital Management [Member] | Payment Cap Date after January 1, 2030 [Member] | Revenue Interest Financing Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Maximum payment cap amount 125,000,000          
NovaQuest Capital Management [Member] | Payment Period Two [Member] | Revenue Interest Financing Agreement [Member] | Minimum [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Revenue interest payment 125,000,000          
Product [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   49,643,000   23,889,000 $ 80,181,000 48,049,000
Product [Member] | NovaQuest Capital Management [Member] | Revenue Interest Financing Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Revenue interest payment 10,000,000          
License [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   0   1,000,000 0 7,000,000
Other Revenue - Contract Manufacturing [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   269,000   5,158,000 1,147,000 9,050,000
Astellas Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Future revenue granted $ 50,000,000          
Percentage of revenue interest on global net sales 100.00%          
Astellas Agreement [Member] | Maximum [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Revenue payment cap amount   125,000,000     125,000,000  
Astellas Agreement [Member] | Product [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Percentage of revenue sold 22.50%          
Astellas Agreement [Member] | Milestone payments [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Percentage of revenue sold 10.00%          
Astellas Agreement [Member] | Milestone payments [Member] | Payment Period One [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Percentage of revenue sold 20.00%          
Development Revenue [Member] | Astellas Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   300,000     600,000  
Drug Product Revenue [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   729,000   14,272,000 25,216,000 16,381,000
Drug Product Revenue [Member] | Astellas Agreement [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Total revenue   700,000     500,000  
Non-cash interest expense related to drug product revenue   $ 1,700,000   $ 1,300,000 $ 3,700,000 $ 3,600,000