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Income Tax - Unrecognized Tax Benefits (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)
Schedule Of Unrecognized Tax Benefits [Abstract]
Balance at beginning of the year	¥ 19,353	$ 2,651	¥ 7,342
Additions	0	0	12,011
Decreases	(8,015)	(1,098)	0
Balance at end of the year	¥ 11,338	$ 1,553	¥ 19,353

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- Definition

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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