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Fair Value Measurements - Summary of Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis (Detail) - Dec. 31, 2020 - Fair Value, Recurring [Member] ¥ in Thousands, $ in Thousands | CNY (¥) | USD ($)
--- | --- | ---
Fair Value, Net Asset (Liability) [Abstract] |  |
Short-term investments | ¥ 73,022 | $ 11,191
Total | 73,022 | $ 11,191
Level 2 |  |
Fair Value, Net Asset (Liability) [Abstract] |  |
Short-term investments | 73,022 |
Total | ¥ 73,022 |

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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 + Details
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