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Share Capital and Share Premium (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 2 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 08, 2017 | Mar. 09, 2018 | Oct. 19, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of classes of share capital [line items] |  |  |  |  |  |
Share premium |  |  |  | $ 139,571 | $ 110,004 | $ 109,954
Proceeds from issuance of share capital |  |  |  | 9,653 | $ 0 | $ 0
Warrants expense |  |  |  | $ 218 |  |
February 2017 Private Placement |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |
Number of warrants exercised |  | 375,000 |  | 1,481,808 |  |
Proceeds from warrant exercises |  | $ 600 |  | $ 2,371 |  |
Proceeds from issuance of share capital | $ 5,000 |  |  |  |  |
Shares issued during period | 5,000,000 |  |  |  |  |
Par value per share | $ 0.004 |  |  |  |  |
Maximum proportion of owneship interest by a warrant holder after warrants exercises | 4.99% |  |  |  |  |
Warrants exercise price | $ 1.6 |  |  |  |  |
Number of outstanding warrants |  |  |  | 30,898,209 |  |
Number of shares called by warrants | 25,000,000 | 30,523,209 |  | 30,898,209 |  |
February 2017 Private Placement | Maximum |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |
Maximum proportion of owneship interest by a warrant holder after warrants exercises | 9.99% |  |  |  |  |
October 2017 Private Placement |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |
Proceeds from issuance of share capital |  |  | $ 2,500 |  |  |
Shares issued during period |  |  | 2,500,000 |  |  |
Par value per share |  |  | $ 0.004 |  |  |
Maximum proportion of owneship interest by a warrant holder after warrants exercises |  |  | 4.99% |  |  |
Warrants exercise price |  |  | $ 1.6 |  |  |
Number of outstanding warrants |  |  |  | 12,500,000 |  |
Number of shares called by warrants |  |  | 12,500,000 | 12,500,000 |  |
October 2017 Private Placement | Maximum |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |
Maximum proportion of owneship interest by a warrant holder after warrants exercises |  |  | 9.99% |  |  |

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