Condensed Financial Information of the Parent Company - Schedule of Condensed Statements of Comprehensive Loss (Detail) ¥ in Thousands, $ in Thousands |
12 Months Ended | ||||
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Dec. 31, 2024
CNY (¥)
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Dec. 31, 2025
CNY (¥)
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Dec. 31, 2025
USD ($)
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Dec. 31, 2024
CNY (¥)
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Dec. 31, 2023
CNY (¥)
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| Revenues | ¥ 539,568 | $ 77,157 | ¥ 515,822 | ¥ 537,435 | |
| Cost of revenues | 136,654 | 19,542 | 153,422 | 174,208 | |
| Gross Profit | 402,914 | 57,615 | 362,400 | 363,227 | |
| Operating expenses: | |||||
| General and administrative expenses | 126,090 | 18,031 | 261,638 | 437,821 | |
| Impairment loss on long-lived assets | 0 | 0 | 35,127 | 0 | |
| Loss from operations | (54,845) | (7,844) | (357,559) | (669,321) | |
| Interest income | 8,053 | 1,152 | 12,212 | 17,956 | |
| Loss before income taxes | (53,790) | (7,693) | (340,741) | (651,301) | |
| Income tax expenses | 1,556 | 223 | 5,885 | 2,388 | |
| Net loss | (55,346) | (7,916) | (346,626) | (653,689) | |
| Other comprehensive (loss) income, net of tax of nil: | |||||
| Foreign currency translation adjustments | (4,089) | (585) | 3,485 | 4,189 | |
| Total comprehensive loss | (59,435) | (8,501) | ¥ (343,141) | (649,500) | |
| Parent Company [Member] | |||||
| Revenues | ¥ 0 | 0 | 0 | 0 | |
| Cost of revenues | 0 | 0 | 0 | 0 | |
| Gross Profit | 0 | 0 | 0 | 0 | |
| Operating expenses: | |||||
| General and administrative expenses | (13,128) | (9,123) | (1,306) | (11,616) | |
| Impairment loss on long-lived assets | (102) | 0 | 0 | 0 | |
| Share of losses in subsidiaries, the VIE and the VIE's subsidiaries | (337,078) | (50,457) | (7,215) | (645,522) | |
| Total operating expenses | (350,308) | (59,580) | (8,521) | (657,138) | |
| Loss from operations | (350,308) | (59,580) | (8,521) | (657,138) | |
| Interest income | 4,021 | 4,234 | 605 | 3,811 | |
| Other expense, net | (339) | 0 | 0 | (362) | |
| Loss before income taxes | (346,626) | (55,346) | (7,916) | (653,689) | |
| Income tax expenses | 0 | 0 | 0 | 0 | |
| Net loss | (346,626) | (55,346) | (7,916) | (653,689) | |
| Other comprehensive (loss) income, net of tax of nil: | |||||
| Foreign currency translation adjustments | 3,485 | (4,089) | (585) | 4,189 | |
| Total comprehensive loss | ¥ (343,141) | ¥ (59,435) | $ (8,501) | ¥ (649,500) | |
| X | ||||||||||
- Definition Income Loss From Subsidiaries VIE And VIE Subsidiaries No definition available.
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| X | ||||||||||
- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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| X | ||||||||||
- Definition Amount of expense classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition 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). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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