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Liability Related to Sale of Future Revenues - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended
Nov. 30, 2022
Mar. 31, 2025
Mar. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Total revenue   $ 2,739,000 $ 25,364,000
Interest expense related to sale of future revenues   2,152,000  
Interest paid   $ 450,000 5,700,000
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   15.60%  
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] | NovaQuest Capital Management [Member] | Revenue Interest Financing Agreement [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Revenue interest payment 10,000,000    
Other Revenue - Contract Manufacturing [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Total revenue   $ 144,000 878,000
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  
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   100,000 300,000
Drug Product Revenue [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Total revenue   2,595,000 24,486,000
Drug Product Revenue [Member] | Astellas Agreement [Member]      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Total revenue   2,600,000 (1,200,000)
Non-cash interest expense related to drug product revenue   $ 2,200,000 $ 2,000,000