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Condensed Financial Information of the Parent Company - Schedule of Condensed Statements of Cash Flows (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Condensed Cash Flow Statements, Captions [Line Items] |  |  |  |
Net cash used in operating activities | ¥ (92,300) | $ (12,640) | ¥ (255,783) | ¥ (456,808)
Net cash used in investing activities | (4,412) | (604) | (9,300) | (7,463)
Net cash (used in) generated from financing activities | (72) | (10) | (48,832) | (86,239)
Effect of exchange rate changes | 3,691 | 506 | 3,863 | 36,666
Net increase (decrease) in cash, cash equivalents and restricted cash | (93,054) | (12,748) | (310,052) | (513,844)
Cash, cash equivalents and restricted cash at the beginning of year | 615,216 | 84,284 | 925,268 | 1,439,112
Cash, cash equivalents and restricted cash at the end of year | 522,162 | 71,536 | 615,216 | 925,268
Parent Company [Member] |  |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |  |
Net cash used in operating activities | (7,833) | (1,074) | (19,253) | (19,357)
Net cash used in investing activities | (5,840) | (799) | (41,305) | 125,576
Net cash (used in) generated from financing activities | 8,902 | 1,220 | 0 | (66,850)
Effect of exchange rate changes | 90 | 12 | 813 | 1,508
Net increase (decrease) in cash, cash equivalents and restricted cash | (4,681) | (641) | (59,745) | 40,877
Cash, cash equivalents and restricted cash at the beginning of year | 14,233 | 1,950 | 73,978 | 33,101
Cash, cash equivalents and restricted cash at the end of year | ¥ 9,552 | $ 1,309 | ¥ 14,233 | ¥ 73,978

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-24 + Details
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