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v3.25.1

Income Taxes - Additional Information (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended | 36 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2018 | Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Income tax rate | 25.00% | 25.00% | 25.00% | 25.00% |  |  |  |
Unrecognized Tax Benefits | ¥ 11,338 |  | ¥ 19,353 | ¥ 7,342 |  | ¥ 11,338 | $ 1,553 | $ 2,651
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 783 | $ 107 | 219 | ¥ 0 |  |  |  |
Undistributed earnings | ¥ 40,752 | $ 5,583 |  |  |  |  |  |
Effective Income Tax Rate Reconciliation, Disposition of Asset, Percent | 10.00% | 10.00% |  |  |  |  |  |
Deferred tax assets, other loss carry forwards | ¥ 9,172 |  | 4,070 |  |  | 9,172 | 1,257 |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | ¥ 1,002 |  |  |  |  | 1,002 | 137 |
VIEs And Subsidiaries Of VIEs [Member] |  |  |  |  |  |  |  |
Income tax rate | 25.00% | 25.00% |  |  |  |  |  |
PRC Subsidiaries [Member] |  |  |  |  |  |  |  |
Undistributed earnings | ¥ 0 |  |  |  |  |  |  |
CHINA |  |  |  |  |  |  |  |
Net operating loss carried forward | ¥ 885,130 |  | ¥ 870,943 |  |  | ¥ 885,130 | $ 121,262 |
Operating Loss Carryforwards, Expiration Term |  |  |  |  | 5 years |  |  |
CHINA | High and New Technology Enterprise [Member] |  |  |  |  |  |  |  |
Income tax rate |  |  |  |  |  | 15.00% |  |
Operating Loss Carryforwards, Expiration Term |  |  |  |  | 10 years |  |  |
UNITED STATES |  |  |  |  |  |  |  |
Income tax rate | 21.00% | 21.00% |  |  |  |  |  |
State income tax rate | 8.84% | 8.84% |  |  |  |  |  |
HONG KONG |  |  |  |  |  |  |  |
Income tax rate | 16.50% | 16.50% |  |  |  |  |  |
MARYLAND |  |  |  |  |  |  |  |
State income tax rate | 8.25% | 8.25% |  |  |  |  |  |
NEW JERSEY |  |  |  |  |  |  |  |
State income tax rate | 6.50% | 6.50% |  |  |  |  |  |
COLORADO |  |  |  |  |  |  |  |
State income tax rate | 4.40% | 4.40% |  |  |  |  |  |

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