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Segment and Geographic Information - Additional information (Detail) - Segment	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2020
Number of operating segment	1
Customer Concentration Risk [Member] | Percentage of Revenue [Member] | Roxadustat [Member]
Concentration risk, percentage		42.00%
Customer Concentration Risk [Member] | Percentage of Accounts Receivable [Member] | Roxadustat [Member]
Concentration risk, percentage		64.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

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