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Additional Information-Condensed Financial Statements of Weibo Corporation - Balance Sheets (Parenthetical) (Details) - $ / shares shares in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Balance sheets |  |
Ordinary shares, par value (in dollars per share) | $ 0.00025 | $ 0.00025
Ordinary shares, shares authorized | 2,400,000 | 2,400,000
Ordinary shares, shares issued | 218,076 | 212,177
Ordinary shares, shares outstanding | 218,076 | 212,177
Class A ordinary shares |  |
Balance sheets |  |
Ordinary shares, shares authorized | 1,800,000 | 1,800,000
Ordinary shares, shares issued | 109,155 |
Ordinary shares, shares outstanding | 109,155 |
Class B ordinary shares |  |
Balance sheets |  |
Ordinary shares, shares authorized | 200,000 | 200,000
Ordinary shares, shares issued | 108,921 |
Ordinary shares, shares outstanding | 108,921 |
Ordinary shares to be designated |  |
Balance sheets |  |
Ordinary shares, shares authorized | 400,000 | 400,000
Weibo Corporation |  |
Balance sheets |  |
Ordinary shares, par value (in dollars per share) | $ 0.00025 | $ 0.00025
Ordinary shares, shares authorized | 2,400,000 | 2,400,000
Ordinary shares, shares issued | 218,076 | 212,177
Ordinary shares, shares outstanding | 218,076 | 212,177
Weibo Corporation | Class A ordinary shares |  |
Balance sheets |  |
Ordinary shares, shares authorized | 1,800,000 | 1,800,000
Ordinary shares, shares issued | 109,155 |
Ordinary shares, shares outstanding | 109,155 |
Weibo Corporation | Class B ordinary shares |  |
Balance sheets |  |
Ordinary shares, shares authorized | 200,000 | 200,000
Ordinary shares, shares issued | 108,921 |
Ordinary shares, shares outstanding | 108,921 |
Weibo Corporation | Ordinary shares to be designated |  |
Balance sheets |  |
Ordinary shares, shares authorized | 400,000 | 400,000

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