The amount of proceeds from milestone payments.

No definition available.

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Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Apr. 30, 2022	Mar. 31, 2022	Jan. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Collaboration Arrangement [Line Items]
Accounts receivable, net - related party				$ 10,124		$ 10,124		$ 3,260
Total revenue				6,933	$ 23,003	13,098	$ 27,793
Commercial supply revenue
Collaboration Arrangement [Line Items]
Total revenue				1,400		4,591	4,790
License and milestone fees
Collaboration Arrangement [Line Items]
Total revenue					15,000		15,000
Royalty revenue
Collaboration Arrangement [Line Items]
Total revenue				123		248
Collaborative revenue
Collaboration Arrangement [Line Items]
Total revenue				5,410	8,003	8,160	8,003
Clinical compound revenue
Collaboration Arrangement [Line Items]
Total revenue						99
CSL Vifor Profit Sharing [Member] \| Collaborative revenue
Collaboration Arrangement [Line Items]
Total revenue				5,410	8,003	8,160	8,003
CSL Vifor, Maruishi and CKDP Agreements [Member]
Collaboration Arrangement [Line Items]
Other contract Assets				0		0		0
Other contract liabilities				0		0		0
Maruishi Pharmaceutical Co., Ltd. [Member] \| Clinical compound revenue
Collaboration Arrangement [Line Items]
Total revenue				0	0	99	0
CSL Vifor [Member]
Collaboration Arrangement [Line Items]
Accounts receivable, net - related party				10,124		10,124		$ 3,260
CSL Vifor [Member] \| Commercial supply revenue
Collaboration Arrangement [Line Items]
Total revenue				1,400		4,591	4,790
CSL Vifor [Member] \| Commercial Supply Revenue With No Associated Costs Of Goods Sold [Member]
Collaboration Arrangement [Line Items]
Total revenue			$ 2,295		0
Cost of goods sold			$ 0
CSL Vifor [Member] \| Commercial Supply Revenue With Associated Costs Of Goods Sold [Member]
Collaboration Arrangement [Line Items]
Revenue		$ 2,495
Cost of goods sold		$ 2,081		1,418		4,008
CSL Vifor [Member] \| Royalty revenue
Collaboration Arrangement [Line Items]
Total revenue					$ 0		$ 0
CSL Vifor [Member] \| Vifor Fresenius Medical Care Renal Pharma Ltd Agreement No 2 [Member] \| License and milestone fees \| Regulatory Milestones [Member]
Collaboration Arrangement [Line Items]
Proceeds from milestone payments	$ 15,000
CSL Vifor [Member] \| CSL Vifor Kapruvia [Member] \| Royalty revenue
Collaboration Arrangement [Line Items]
Total revenue				$ 123		$ 248