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Segment Reporting - Summary Of Revenues By Geographic Area (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 CNY (¥)
Revenue From External Customers By Geographic Areas [Line Items]
Revenues	¥ 515,822	$ 70,667	¥ 537,435	¥ 563,238
PRC
Revenue From External Customers By Geographic Areas [Line Items]
Revenues	510,241	69,902	534,928	553,304
UNITED STATES
Revenue From External Customers By Geographic Areas [Line Items]
Revenues	¥ 5,581	$ 765	¥ 2,507	¥ 9,934

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Revenue from external customers by geographic areas

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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