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Fair Value Measurements - Summary Of Assets And Liabilities That Are Measured Or Disclosed At Fair Value On a Recurring Basis (Detail) - Short-term Investments - Fair Value, Recurring - CNY (¥) ¥ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Short-term investments	¥ 884,996	¥ 536,401
Significant other observable inputs (Level 2)
Assets:
Short-term investments	¥ 884,996	¥ 536,401

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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