Short-Term Loans - Summary of Short-Term Debt (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Debt Disclosure [Abstract]
Short-term borrowing—banks	¥ 9,000	$ 1,412	¥ 500,000
Total	¥ 9,000

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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