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Related Party Transactions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Collaboration and licensing agreements
Accounts due from related parties	$ 2,765	$ 3,260
Revenue from contract with customer	20,968	41,867	$ 23,028
Commercial supply revenue
Collaboration and licensing agreements
Revenue from contract with customer	5,843	10,223	701
Collaborative revenue
Collaboration and licensing agreements
Revenue from contract with customer	12,936	16,572	706
Royalty revenue
Collaboration and licensing agreements
Revenue from contract with customer	415	72
License and milestone fees
Collaboration and licensing agreements
Revenue from contract with customer	910	15,000	21,223
Clinical compound revenue
Collaboration and licensing agreements
Revenue from contract with customer	165		398
CSL Vifor Profit Sharing \| Collaborative revenue
Collaboration and licensing agreements
Revenue from contract with customer	12,397	16,572
CSL Vifor Kapruvia \| Royalty revenue
Collaboration and licensing agreements
Revenue from contract with customer	415	72
Affiliated Entity \| CSL Vifor Profit Sharing \| Collaborative revenue
Collaboration and licensing agreements
Revenue from contract with customer	$ 12,397	16,572
Affiliated Entity \| Vifor International Ltd.
Collaboration and licensing agreements
Shares owned as a result of upfront and milestone payments	7,396,770
Related party ownership percentage	13.60%
Affiliated Entity \| Vifor International Ltd. \| License and milestone fees
Collaboration and licensing agreements
Stock Sale Premium			5,031
Affiliated Entity \| CSL Vifor
Collaboration and licensing agreements
Accounts due from related parties	$ 2,765	3,260
Affiliated Entity \| CSL Vifor \| Commercial supply revenue
Collaboration and licensing agreements
Revenue from related parties	5,843	10,223	701
Revenue from contract with customer	5,843	10,223	701
Related party cost of goods sold	6,174	7,266	0
Affiliated Entity \| CSL Vifor \| Royalty revenue
Collaboration and licensing agreements
Revenue from related parties	284
Affiliated Entity \| CSL Vifor \| License and milestone fees
Collaboration and licensing agreements
Revenue from related parties		15,000
Affiliated Entity \| CSL Vifor \| Clinical compound revenue
Collaboration and licensing agreements
Revenue from related parties			361
Affiliated Entity \| CSL Vifor \| CSL Vifor Profit Sharing \| Collaborative revenue
Collaboration and licensing agreements
Revenue from contract with customer	12,397	16,572	0
Affiliated Entity \| CSL Vifor \| CSL Vifor Kapruvia \| Royalty revenue
Collaboration and licensing agreements
Revenue from related parties	$ 415	$ 72
Affiliated Entity \| Vifor Fresenius Medical Care Renal Pharma Ltd. \| License and milestone fees
Collaboration and licensing agreements
Revenue from related parties			$ 15,000