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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) - USD ($) shares in Thousands, $ in Thousands | Ordinary Shares SINA | Ordinary Shares Alibaba | Ordinary Shares IPO | Ordinary Shares | Additional Paid-In Capital SINA | Additional Paid-In Capital Alibaba | Additional Paid-In Capital IPO | Additional Paid-In Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit | Non-controlling Interests | SINA | Alibaba | IPO | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2013 |  |  |  | $ 37 |  |  |  | $ 31,352 | $ 458 | $ (277,088) | $ 7,269 |  |  |  | $ (237,972)
Balance (in shares) at Dec. 31, 2013 |  |  |  | 150,392 |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Shareholders' Equity (Deficit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares pursuant to stock plan |  |  |  | $ 1 |  |  |  | 1,918 |  |  |  |  |  |  | 1,919
Issuance of ordinary shares pursuant to stock plan (in shares) |  |  |  | 3,900 |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares (either in IPO or to related party) |  |  | $ 5 |  |  | $ 42,224 | $ 301,273 |  |  |  |  |  | $ 42,224 | $ 301,278 |
Issuance of ordinary shares (either in IPO or to related party) (in shares) |  | 2,923 | 19,320 |  |  |  |  |  |  |  |  |  |  |  |
Deemed contribution from Alibaba due to exercise of call option by Alibaba |  |  |  |  |  | $ 15,300 |  |  |  |  |  |  | $ 15,300 |  |
Repurchase of ordinary shares from SINA |  |  |  |  | $ (42,224) |  |  |  |  |  |  | $ (42,224) |  |  |
Repurchase of ordinary shares from SINA (in shares) | (2,923) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of preferred shares into ordinary shares |  |  |  | $ 8 |  |  |  | 479,604 |  |  |  |  |  |  | 479,612
Conversion of preferred shares into ordinary shares (in shares) |  |  |  | 30,046 |  |  |  |  |  |  |  |  |  |  |
Non-cash stock-based compensation |  |  |  |  |  |  |  | 13,779 |  |  |  |  |  |  | 13,779
Deemed contribution from SINA |  |  |  |  | $ 61,176 |  |  |  |  |  |  | $ 61,176 |  |  |
Sale of subsidiaries' shares to non-controlling interests |  |  |  |  |  |  |  |  |  |  | 1,283 |  |  |  | 1,283
Net income (loss) |  |  |  |  |  |  |  |  |  | (65,325) | (143) |  |  |  | (65,468)
Currency translation adjustments |  |  |  |  |  |  |  |  | (1,227) |  | (223) |  |  |  | (1,450)
Net change in other comprehensive loss from available-for-sale securities |  |  |  |  |  |  |  |  | (2,067) |  |  |  |  |  | (2,067)
Balance at Dec. 31, 2014 |  |  |  | $ 51 |  |  |  | 904,402 | (2,836) | (342,413) | 8,186 |  |  |  | 567,390
Balance (in shares) at Dec. 31, 2014 |  |  |  | 203,658 |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Shareholders' Equity (Deficit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares pursuant to stock plan |  |  |  | $ 2 |  |  |  | 8,121 |  |  |  |  |  |  | 8,123
Issuance of ordinary shares pursuant to stock plan (in shares) |  |  |  | 8,519 |  |  |  |  |  |  |  |  |  |  |
Non-cash stock-based compensation |  |  |  |  |  |  |  | 26,399 |  |  |  |  |  |  | 26,399
Net income (loss) |  |  |  |  |  |  |  |  |  | 34,745 | (556) |  |  |  | 34,189
Currency translation adjustments |  |  |  |  |  |  |  |  | (7,601) |  | (273) |  |  |  | (7,874)
Net change in other comprehensive loss from available-for-sale securities |  |  |  |  |  |  |  |  | (198) |  |  |  |  |  | (198)
Balance at Dec. 31, 2015 |  |  |  | $ 53 |  |  |  | 938,922 | (10,635) | (307,668) | 7,357 |  |  |  | $ 628,029
Balance (in shares) at Dec. 31, 2015 |  |  |  | 212,177 |  |  |  |  |  |  |  |  |  |  | 212,177
Increase (Decrease) in Shareholders' Equity (Deficit) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares pursuant to stock plan |  |  |  | $ 2 |  |  |  | 3,981 |  |  |  |  |  |  | $ 3,983
Issuance of ordinary shares pursuant to stock plan (in shares) |  |  |  | 5,899 |  |  |  |  |  |  |  |  |  |  |
Non-cash stock-based compensation |  |  |  |  |  |  |  | 36,902 |  |  |  |  |  |  | 36,902
Sale (Purchase) of subsidiaries' shares to (from) non-controlling shareholders, net |  |  |  |  |  |  |  |  |  |  | (587) |  |  |  | (587)
Net income (loss) |  |  |  |  |  |  |  |  |  | 108,027 | (2,363) |  |  |  | 105,664
Currency translation adjustments |  |  |  |  |  |  |  |  | (18,624) |  | (274) |  |  |  | (18,898)
Net change in other comprehensive loss from available-for-sale securities |  |  |  |  |  |  |  |  | 2,265 |  |  |  |  |  | 2,265
Balance at Dec. 31, 2016 |  |  |  | $ 55 |  |  |  | $ 979,805 | $ (26,994) | $ (199,641) | $ 4,133 |  |  |  | $ 757,358
Balance (in shares) at Dec. 31, 2016 |  |  |  | 218,076 |  |  |  |  |  |  |  |  |  |  | 218,076

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