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Share Capital and Share Premium (Details) - USD ($) $ in Thousands | 1 Months Ended | 6 Months Ended | 10 Months Ended |
--- | --- | --- | --- | ---
Feb. 08, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Oct. 19, 2017 | Dec. 31, 2017
Disclosure of classes of share capital [line items] |  |  |  |  |
Share premium |  | $ 140,199 |  |  | $ 139,571
Proceeds from issuance of share capital |  | $ 600 | $ 5,011 |  |
February 2017 Private Placement |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |
Number of warrants exercised |  | 375,000 |  |  |
Proceeds from warrant exercises |  | $ 600 |  |  |
Maximum proportion of owneship interest by a warrant holder after warrants exercises | 4.99% |  |  |  |
Number of outstanding warrants |  | 30,523,209 |  |  |
Number of shares called by warrants |  | 30,523,209 |  |  |
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] |  |  |  |  |
Maximum proportion of owneship interest by a warrant holder after warrants exercises |  |  |  | 4.99% |
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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