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Short-Term Investments - Additional Information (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥)
Net Investment Income | ¥ 24,744 | $ 3,883 | ¥ 9,095 | ¥ 9,718
Wealth management products [Member] |  |  |  |
Net Investment Income | ¥ 24,744 |  | ¥ 9,095 | ¥ 9,718

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