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Cash and cash equivalents (Tables) | 12 Months Ended
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Dec. 31, 2017
Cash and cash equivalents [Abstract] |
Summary of Cash on Hand and Cash Held at Bank | Cash on hand and cash held at bank balance as of December 31, 2016 and 2017 primarily consist of the following currencies:
|  | December 31, 2016 |  | December 31, 2017 |
(In thousands) |  | Amount |  | USD equivalent |  | Amount |  | USD equivalent |
RMB |  |  | 538,660 |  |  | 77,651 |  |  | 436,794 |  |  | 66,847 |
USD |  |  | 121,726 |  |  | 121,726 |  |  | 166,530 |  |  | 166,530 |
HKD |  |  | 987 |  |  | 127 |  |  | 794 |  |  | 102 |
Total |  |  |  |  |  | 199,504 |  |  |  |  |  | 233,479 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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