Related Party Transactions and Balances - Summary of Related Party Balances Due from and Due to the Founder (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)
Current:
Amounts due from related parties	¥ 0	$ 0	¥ 10,100
Mr Liang Changlin [Member]
Current:
Amounts due from related parties	0	0	9,000
Shanghai Tiejun Enterprise Consulting Center [Member]
Current:
Amounts due from related parties	¥ 0	$ 0	¥ 1,100

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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+ Details