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Income Taxes - Schedule Of Components Of Income Tax Expense Benefit (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)
Income Tax Disclosure [Abstract]
Current tax	¥ 9,373	$ 1,471	¥ 0	¥ 0
Deferred tax	0	0	0	0
Income tax expenses	¥ 9,373	$ 1,471	¥ 0	¥ 0

X

- Definition

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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