v3.26.3
Collaborations, Licensing and Other Arrangements - Summary of UT Revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Total revenue from UT $ 101,870 $ 82,130 $ 301,416 $ 237,011
United Therapeutics Corporation        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Total revenue from UT 56,297 59,288 178,953 171,563
United Therapeutics Corporation | License Agreement - Royalties        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Total revenue from UT 37,463 33,319 102,583 94,552
United Therapeutics Corporation | License Agreement        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Total revenue from UT 2,308   8,231  
United Therapeutics Corporation | Commercial Supply        
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]        
Total revenue from UT $ 16,526 $ 25,969 $ 68,139 $ 77,011