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Property and equipment (Tables) | 12 Months Ended
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Dec. 31, 2017
Property and equipment [Abstract] |
Schedule of Property and Equipment |
(In thousands) |  | December 31, 2016 |  | December 31, 2017 |
Servers and network equipment |  |  | 42,597 |  |  | 49,582 |
Computer equipment |  |  | 1,538 |  |  | 1,785 |
Furniture, fixtures and office equipment |  |  | 845 |  |  | 850 |
Motor vehicles |  |  | 299 |  |  | 273 |
Leasehold improvements |  |  | 2,793 |  |  | 3,157 |
Total original costs |  |  | 48,072 |  |  | 55,647 |
Less: Accumulated depreciation |  |  | (27,650) |  |  | (35,459) |
Less: Impairment |  |  | — |  |  | (20) |
Sub-total |  |  | 20,422 |  |  | 20,168 |
Construction in progress |  |  | 574 |  |  | 4,517 |
Total |  |  | 20,996 |  |  | 24,685 |
Summary of Depreciation Expense |
(In thousands) |  | December 31, 2015 |  | December 31, 2016 |  | December 31, 2017 |
Cost of revenues |  |  | 4,873 |  |  | 5,848 |  |  | 7,647 |
General and administrative expenses |  |  | 628 |  |  | 306 |  |  | 277 |
Sales and marketing expenses |  |  | 7 |  |  | 5 |  |  | — |
Research and development expenses |  |  | 8 |  |  | 6 |  |  | 24 |
Total |  |  | 5,516 |  |  | 6,165 |  |  | 7,948 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Depreciation Expense Table [Text Block] + References No definition available. + Details
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