v3.23.2
Collaboration and Licensing Agreements - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended
Oct. 31, 2020
May 31, 2018
May 17, 2018
Vifor Fresenius Medical Care Renal Pharma Ltd Agreement No 2 [Member]      
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]      
Percentage of net profit sharing   50.00%  
CSL Vifor Maximum [Member] | Vifor Fresenius Medical Care Renal Pharma Ltd Agreement No 1 [Member]      
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]      
Potential sales-based milestone payments $ 240,000    
CSL Vifor [Member] | Vifor Fresenius Medical Care Renal Pharma Ltd Agreement No 1 [Member]      
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]      
Percentage of net profit sharing 40.00%    
CSL Vifor [Member] | Vifor Fresenius Medical Care Renal Pharma Ltd Agreement No 1 [Member]      
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]      
Percentage of net profit sharing 60.00%    
Vifor Fresenius Medical Care Renal Pharma Ltd Agreement No 2 [Member] | Maximum [Member] | Regulatory and Commercial Milestones [Member]      
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]      
Potential milestone payments     $ 440,000