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Fair values (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of fair value measurement of assets [abstract] |
Fair value measurement |
| Carrying amount |  | Fair value
(in thousands of USD) | Other financial liabilities |  | Level 1 | Level 2 | Level 3 | Total
December 31, 2018 |  |  |  |  |  |
Financial liabilities measured at fair value |  |  |  |  |  |
Derivative financial instruments | 831 |  | - | - | 831 | 831
| 831 |  |  |  |  |
Financial liabilities not measured at fair value |  |  |  |  |  |
Long-term borrowings | 37,163 |  | - | 3 7,030 | - | 3 7,030
| 37,163 |  |  |  |  |
| Carrying amount |  | Fair value
(in thousands of USD) | Other financial liabilities |  | Level 1 | Level 2 | Level 3 | Total
December 31, 2017 |  |  |  |  |  |
Financial liabilities not measured at fair value |  |  |  |  |  |
Long-term borrowings | 41,538 |  | - | 41,219 | - | 41,219
| 41,538 |  |  |  |  |

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