The percentage of net profits sharing.

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The amount of potential milestone payment of common stock investment.

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The amount of potential payment upon achievement of certain sales-based milestones.

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The premium related to the common stock investment upon regulatory approval of CR845.

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The length of time used to set the price in the common stock investment upon regulatory approval of CR845.

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The cash inflow from the additional capital contribution to the entity.

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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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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Collaboration and Licensing Agreements - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended			3 Months Ended		9 Months Ended
	Oct. 15, 2020	May 17, 2018	Oct. 31, 2021	Oct. 31, 2020	May 31, 2018	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Purchase common stock per share amount							$ 15.23		$ 15.23
Revenues						$ 10,813	$ 20,272	$ 38,606	$ 22,207
License and Milestone Fees
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues							20,031	15,000	21,223
Collaborative Revenue
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues						7,443		15,446	706
Commercial Supply Revenue
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues						3,370		8,160
Clinical Compound Revenue
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues							241		278
Vifor Agreement No 1 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage of net profit sharing				60.00%
Vifor Agreement No 2 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage of net profit sharing					50.00%
Maximum [Member] \| Vifor Agreement No 1 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential sales-based milestone payments			$ 240,000
Maximum [Member] \| Vifor Agreement No 2 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential milestone payments						440,000		440,000
Maruishi Pharmaceutical Co., Ltd. [Member] \| Clinical Compound Revenue
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues						0	0	0	37
Vifor International Ltd. [Member] \| License and Milestone Fees
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues							5,031		5,031
Vifor International Ltd. [Member] \| Vifor Agreement No 1 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage of net profit sharing				40.00%
Common stock, shares issued				2,939,552
Proceeds from the sale of common stock	$ 50,000
Purchase common stock per share amount				$ 17.0094
Vifor International Ltd. [Member] \| Vifor Agreement No 1 [Member] \| License [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Non-refundable, non-creditable upfront payment				$ 100,000
Vifor International Ltd. [Member] \| Vifor Agreement No 2 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Common stock, shares issued		1,174,827
Purchase of common stock value		$ 20,000
Purchase common stock per share amount		$ 17.024
Vifor International Ltd. [Member] \| Vifor Agreement No 2 [Member] \| License and Milestone Fees
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues							15,000		15,000
Vifor International Ltd. [Member] \| Regulatory Milestones [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Common stock, shares issued			3,282,391
Proceeds from the sale of common stock			$ 50,000
Purchase common stock per share amount			$ 15.23
Percentage of premium on common stock investment			20.00%
Stock issuance price measurement period			30 days
Vifor [Member] \| Collaborative Revenue
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues						7,443	$ 0	15,446	$ 0
Vifor [Member] \| Commercial Supply Revenue
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues						$ 3,370		8,160
Vifor [Member] \| Vifor Agreement No 2 [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage of net profit sharing					50.00%
Non-refundable, non-creditable upfront payment		$ 50,000
Vifor [Member] \| Vifor Agreement No 2 [Member] \| License and Milestone Fees
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Revenues								$ 15,000