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v3.26.1

Income Taxes - Reconciliation of the PRC statutory tax rate to the effective tax rate (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Amount |  |  |
PRC Statutory EIT rate | $ 151,399 |  |
Changes in Valuation Allowances | 6,278 |  |
Nontaxable and Nondeductible Items |  |  |
Effect on tax holiday and preferential tax treatment | (37,011) |  |
Research and development tax credits | (18,172) |  |
Investment related gain | (6,608) |  |
Other | 1,696 |  |
Changes in Unrecognized Tax Benefits |  |  |
Stock-based compensation | (646) |  |
Other Adjustments |  |  |
Effect of PRC withholding tax | 41,897 |  |
Other Adjustments | 3,527 |  |
Income tax expense | $ 144,521 | $ 110,550 | $ 145,287
Tax Jurisdiction of Domicile [Extensible Enumeration] | CHINA |  |
Percent |  |  |
PRC Statutory EIT rate | 25.00% | 25.00% | 25.00%
Change in valuation allowance | 1.00% | 4.40% | 5.00%
Nontaxable and Nondeductible Items |  |  |
Effect on tax holiday and preferential tax treatment | (6.10%) | (11.00%) | (9.50%)
Research and development super-deduction | (3.00%) | (5.30%) | (4.40%)
Non-deductible expenses and non-taxable income and others |  | 1.00% | 3.50%
Investments related gain/loss | (1.10%) |  |
Other | 0.30% |  |
Changes in Unrecognized Tax Benefits |  |  |
Stock-based compensation | (0.10%) |  |
Other Adjustments |  |  |
Effect of PRC withholding tax | 6.90% | 5.20% | 8.70%
Tax rate difference from statutory rate in other jurisdictions | 0.60% | 9.00% | 7.60%
Effective tax rate for the Group | 23.90% | 26.30% | 28.90%
Cayman Islands |  |  |
Amount |  |  |
Foreign Tax Effects | $ 14,766 |  |
Percent |  |  |
Foreign Tax Effects | 2.40% |  |
Hong Kong |  |  |
Amount |  |  |
Foreign Tax Effects | $ (12,915) |  |
Percent |  |  |
Foreign Tax Effects | (2.10%) |  |
Other foreign jurisdictions |  |  |
Amount |  |  |
Foreign Tax Effects | $ 310 |  |
Percent |  |  |
Foreign Tax Effects | 0.10% |  |

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