Income Taxes - Schedule of Income Taxes Paid Net (Detail) - 12 months ended Dec. 31, 2025 ¥ in Thousands, $ in Thousands |
CNY (¥) |
USD ($) |
|---|---|---|
| Income Tax Paid, by Individual Jurisdiction [Line Items] | ||
| Income Tax paid, net of refunds | ¥ 879 | $ 126 |
| PRC | ||
| Income Tax Paid, by Individual Jurisdiction [Line Items] | ||
| Income Tax paid, net of refunds | 781 | 112 |
| Hong Kong | ||
| Income Tax Paid, by Individual Jurisdiction [Line Items] | ||
| Income Tax paid, net of refunds | 82 | 12 |
| Other jurisdictions | ||
| Income Tax Paid, by Individual Jurisdiction [Line Items] | ||
| Income Tax paid, net of refunds | ¥ 16 | $ 2 |