Income Tax Expense - Classification of the Group's Net Deferred Tax Assets (Detail) ¥ in Thousands, $ in Thousands	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Deferred tax assets and liabilities [abstract]
Deferred tax assets	¥ 450,882	$ 64,857	¥ 398,174
Deferred tax liabilities	(61,825)	(8,893)	(65,544)
Net deferred tax assets	¥ 389,057	$ 55,964	¥ 332,630

The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]

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