v3.26.1
LIABILITY RELATED TO SETTLEMENT ROYALTIES, WORKING CAPITAL FUND LIABILITY AND LIABILITY RELATED TO SALE OF FUTURE ROYALTIES - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Feb. 28, 2022
Feb. 28, 2021
May 31, 2017
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
May 31, 2028
May 31, 2027
May 31, 2026
Dec. 31, 2025
Jul. 01, 2025
Jul. 10, 2024
May 03, 2024
Mar. 18, 2022
Feb. 18, 2022
Feb. 25, 2021
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Common stock, issued (in shares)       271,742,717   271,742,717         265,424,818            
Annual effective interest rate (as percent)       0.00%   0.00%                      
Interest expense       $ (3,071) $ (6,834) $ (7,762) $ (14,604)                    
Refund liability to customer, amortization of discount       1,200 2,300 1,200 2,300                    
Refund liability to customer, amortization of deferred gain       800 1,000 1,500 2,000                    
Maximum annual royalty payout capacity   $ 13,000                              
Percentage of royalty payment to be received once maximum annual royalty payout has been paid   85.00%                              
Maximum aggregate royalty payout capacity   $ 150,000                              
Liability related to sale of future royalties, net of current portion       $ 50,034   $ 50,034         $ 50,608           $ 44,800
Private Placement                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Sale of stock, price per share (in dollars per share) $ 5.00                                
Number of shares sold in offering (in shares) 4,000,000                                
Aggregate net proceeds from offering $ 20,000                                
Vifor (International) Ltd.                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Annual effective interest rate (as percent)       9.90%   9.90%                      
Interest expense       $ 1,700 5,400 $ 5,300 10,800                    
Refund liability to customer, gross                             $ 40,000    
Vifor (International) Ltd. | License Agreement                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Common stock, issued (in shares)     3,571,429                            
Sale of stock, price per share (in dollars per share)     $ 14.00                            
Proceeds from common stock sold     $ 50,000                            
Vifor (International) Ltd. | License                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Deferred revenue 25,000                             $ 25,000  
Long-term deferred revenue $ 13,600   $ 4,700                            
Transaction price                               $ 43,300  
Refund liability to customer, interest rate (as percent)                             15.00%    
Vifor (International) Ltd. | License | Private Placement                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Long-term deferred revenue       18,300   18,300                      
CSL Vifor                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Tiered royalty payments as a percentage of net sales                         $ 450,000        
Refund liability to customer, interest rate (as percent)                           15.00%      
Royalty payments                       $ 40,000          
Royalty true-up payments                   $ 10,000              
CSL Vifor | Forecast                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Royalty true-up payments               $ 40,000 $ 20,000                
CSL Vifor | Maximum                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Tiered royalty payments as a percentage of net sales                         $ 450,000        
Tiered royalty payments, percentage                           14.00%      
CSL Vifor | Minimum                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Tiered royalty payments, percentage                           8.00%      
Vifor International Limited, First Investment | License                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Long-term deferred revenue       4,700   4,700                      
Vifor International Limited, Second Investment | License                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Long-term deferred revenue       13,600   13,600                      
HealthCare Royalty Partners IV, L.P.                                  
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                  
Payments for royalties       $ 300 $ 400 $ 800 $ 900