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CASH, CASH EQUIVALENTS AND OTHER INVESTMENTS - NON CURRENT AND CURRENT (Tables) | 12 Months Ended
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Dec. 31, 2017
Cash, cash equivalents and other investments [Abstract] |
Schedule of other investments |
| As of December 31,
| 2017 |  | 2016
Investments in companies under cost method | 252 |  |  | — |
Investments in debt instruments | 3,128 |  |  | 5,998 |
Other investments, net – Non-current | 3,380 |  |  | 5,998 |
Schedule of cash and cash equivalents |
| As of December 31,
| 2017 |  | 2016
(i) Other investments |  |  |
Other deposits with maturity of more than three months | 132,736 |  |  | 144,853 |
Other investments - Current | 132,736 |  |  | 144,853 |
(ii) Cash and cash equivalents |  |  |
Cash and banks | 100,739 |  |  | 70,711 |
Restricted cash | 50 |  |  | 83 |
Short-term bank deposits | 229,239 |  |  | 70,760 |
Other deposits with maturity of less than three months | 7,751 |  |  | 41,909 |
Cash and cash equivalents | 337,779 |  |  | 183,463 |

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