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Income Taxes (Details) $ / shares in Units, $ in Millions, ¥ in Billions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 | Dec. 31, 2023 USD ($) jurisdiction $ / shares | Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 | Dec. 31, 2019 HKD ($) | Dec. 31, 2018 HKD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Income taxes |  |  |  |  |  |  |  |  |
Number of taxable jurisdictions | jurisdiction |  | 2 |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Loss from non-China operations |  | $ (145,244,000) | $ (422,860,000) | $ (232,830,000) |  |  |  |  |
Income from China operations |  | 648,026,000 | 550,946,000 | 783,548,000 |  |  |  |  |
Income before income tax expenses |  | 502,782,000 | 128,086,000 | 550,718,000 |  |  |  |  |
Total income tax expenses |  | $ 145,287,000 | $ 30,277,000 | $ 138,841,000 |  |  |  |  |
Effective tax rate |  | 28.90% | 23.60% | 25.20% |  |  |  |  |
Income tax rate (as a percent) |  | 25.00% | 25.00% | 25.00% |  |  |  |  |
Percentage research and development expenses | 200.00% | 150.00% |  |  | 175.00% | 175.00% | 175.00% |  |
Composition of income tax expenses for China operations |  |  |  |  |  |  |  |  |
Current income tax expenses |  | $ 121,249,000 | $ 55,098,000 | $ 151,319,000 |  |  |  |  |
Deferred tax expenses (benefits) |  | 24,038,000 | (24,821,000) | (12,478,000) |  |  |  |  |
Income tax expenses |  | $ 145,287,000 | $ 30,277,000 | $ 138,841,000 |  |  |  |  |
Reconciliation of the statutory tax rate to the effective tax rate |  |  |  |  |  |  |  |  |
PRC Statutory EIT rate |  | 25.00% | 25.00% | 25.00% |  |  |  |  |
Effect on tax holiday and preferential tax treatment (as a percent) |  | (9.50%) | (29.70%) | (13.10%) |  |  |  |  |
Research and development super-deduction (as a percent) |  | (4.40%) | (21.10%) | (7.50%) |  |  |  |  |
Non-deductible expenses and non-taxable income and others (as a percent) |  | (3.50%) | (30.10%) | 9.20% |  |  |  |  |
Change in valuation allowance (as a percent) |  | 5.00% | 8.20% | 0.70% |  |  |  |  |
Effect of PRC withholding tax |  | 8.70% |  |  |  |  |  |  |
Tax rate difference from statutory rate in other jurisdictions (as percent) |  | 7.60% | 71.30% | 10.90% |  |  |  |  |
Effective tax rate for the Group (as a percent) |  | 28.90% | 23.60% | 25.20% |  |  |  |  |
Deferred tax assets: |  |  |  |  |  |  |  |  |
Net operating loss carry forwards |  | $ 49,802,000 | $ 18,289,000 |  |  |  |  |  |
Investment-related impairment |  | 50,441,000 | 52,363,000 |  |  |  |  |  |
Depreciation, accounts receivable, accrued and other liabilities |  | 72,207,000 | 73,557,000 |  |  |  |  |  |
Valuation allowance |  | (129,188,000) | (104,220,000) |  |  |  |  |  |
Net deferred tax assets |  | 43,262,000 | 39,989,000 |  |  |  |  |  |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |
Acquired intangible assets |  | 28,528,000 | 27,435,000 |  |  |  |  |  |
Depreciation |  | 1,769,000 | 1,731,000 |  |  |  |  |  |
Unrealized investment-related gain |  | 12,282,000 | 12,414,000 |  |  |  |  |  |
Withholding tax |  | 23,365,000 |  |  |  |  |  |  |
Others |  | 207,000 | 114,000 |  |  |  |  |  |
Total deferred tax liabilities |  | 66,151,000 | 41,694,000 |  |  |  |  |  |
Valuation allowance on deferred tax assets |  | 129,200,000 | 104,200,000 |  |  |  |  |  |
Interest and penalties related to uncertain tax positions |  | $ 0 | 0 |  |  |  |  |  |
Liability related to uncertain tax positions expected to be recognized |  |  |  | $ 27,900,000 |  |  |  |  |
Tax liability related to the uncertain tax positions |  |  | 21,400,000 |  |  |  |  |  |
State Administration of Taxation, China |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Income tax rate (as a percent) |  | 25.00% |  |  |  |  |  |  |
Reconciliation of the statutory tax rate to the effective tax rate |  |  |  |  |  |  |  |  |
PRC Statutory EIT rate |  | 25.00% |  |  |  |  |  |  |
Non-China |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Total income tax expenses |  | $ 45,441,000 | (14,176,000) | 1,355,000 |  |  |  |  |
Deferred tax charges from fair value change of investments |  |  | 14,200,000 |  |  |  |  |  |
Composition of income tax expenses for China operations |  |  |  |  |  |  |  |  |
Income tax expenses |  | 45,441,000 | $ (14,176,000) | $ 1,355,000 |  |  |  |  |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |
Withholding tax in connection with the dividends paid and to be paid |  | $ 43,700,000 |  |  |  |  |  |  |
Cayman Islands |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Withholding income tax on dividends distributed by subsidiaries to its immediate holding entity outside China (as a percent) |  | 0.00% |  |  |  |  |  |  |
Hong Kong |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Withholding income tax on dividends distributed by subsidiaries to its immediate holding entity outside China (as a percent) |  | 0.00% |  |  |  |  |  |  |
Income tax rate (as a percent) |  | 16.50% | 16.50% | 16.50% | 16.50% | 16.50% | 16.50% |  |
Withholding profits earned |  |  |  |  |  | $ 2 | $ 2 |  |
Withholding income tax rate for dividend paid to foreign tax resident investors (as a percentage) |  |  |  |  |  | 8.25% | 8.25% |  |
Net operating loss carry forwards |  | $ 2,400,000 |  |  |  |  |  |  |
Reconciliation of the statutory tax rate to the effective tax rate |  |  |  |  |  |  |  |  |
PRC Statutory EIT rate |  | 16.50% | 16.50% | 16.50% | 16.50% | 16.50% | 16.50% |  |
China |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Total income tax expenses |  | $ 99,846,000 | $ 44,453,000 | $ 137,486,000 |  |  |  |  |
Effective tax rate |  | 15.40% | 8.10% | 17.50% |  |  |  |  |
Withholding income tax on dividends distributed by subsidiaries to its immediate holding entity outside China (as a percent) |  | 10.00% |  |  |  |  |  |  |
Income tax rate (as a percent) |  | 25.00% |  |  |  |  |  |  |
Maximum percentage of withholding income tax on dividends distributed by subsidiaries to its immediate holding entity in Hong Kong |  | 5.00% |  |  |  |  |  |  |
Percentage of ownership interests held by foreign investors |  | 25.00% |  |  |  |  |  | 25.00% |
Composition of income tax expenses for China operations |  |  |  |  |  |  |  |  |
Income tax expenses |  | $ 99,846,000 | $ 44,453,000 | $ 137,486,000 |  |  |  |  |
Reconciliation of the statutory tax rate to the effective tax rate |  |  |  |  |  |  |  |  |
PRC Statutory EIT rate |  | 25.00% |  |  |  |  |  |  |
Effective tax rate for the Group (as a percent) |  | 15.40% | 8.10% | 17.50% |  |  |  |  |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |
Percentage of withholding income tax on dividends distributed by PRC subsidiaries to its immediate holding company in Hong Kong |  | 5.00% |  |  |  |  |  |  |
China | High and New Technology Enterprises |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Preferential tax rate |  | 15.00% | 15.00% | 15.00% |  |  |  |  |
Weibo Technology |  |  |  |  |  |  |  |  |
Reconciliation of the statutory tax rate to the effective tax rate |  |  |  |  |  |  |  |  |
Preferential tax treatment recognized |  | $ 48,000,000.0 | $ 37,900,000 | $ 72,300,000 |  |  |  |  |
Effect of tax exemption and preferential tax on basic net income per share (USD per share) | $ / shares |  | $ 0.20 | $ 0.16 | $ 0.32 |  |  |  |  |
Weibo Technology | Weibo HK |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Proceeds from dividends received |  | $ 406,100,000 |  |  |  |  |  |  |
Withholding tax In connection with dividends received |  | 20,500,000 |  |  |  |  |  |  |
Accrued additional withholding tax on retained earnings |  | 23,100,000 |  |  |  |  |  |  |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |
Total undistributed PRC earnings | ¥ |  |  |  |  |  |  |  | ¥ 19.9 | ¥ 22.4
Weibo Technology | Research and development |  |  |  |  |  |  |  |  |
Components of income before income taxes |  |  |  |  |  |  |  |  |
Total income tax expenses |  | (22,200,000) | $ 26,900,000 | $ 41,400,000 |  |  |  |  |
Composition of income tax expenses for China operations |  |  |  |  |  |  |  |  |
Income tax expenses |  | (22,200,000) | 26,900,000 | 41,400,000 |  |  |  |  |
Weibo Technology | High and New Technology Enterprises |  |  |  |  |  |  |  |  |
Reconciliation of the statutory tax rate to the effective tax rate |  |  |  |  |  |  |  |  |
Effect of preferential tax treatment |  | $ 42,200,000 | $ 26,900,000 | $ 55,100,000 |  |  |  |  |

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