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Inventories (Tables) | 6 Months Ended
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Jun. 30, 2018
Property, plant and equipment [abstract] |
Disclosure of impairment allowance on inventories | The impairment allowance as of June 30, 2018 and June 30, 2017, respectively, amounted to USD 2,073k and USD 4,980k and developed as follows:
|  | In USD k
|  | 2018 |  | 2017
As at January 1, |  | 1,717 |  |  | 4,436 |
Currency translation |  | (48 | ) |  | 375 |
Addition |  | 1,276 |  |  | 2,826 |
Utilization |  | (342 | ) |  | (1,920 | )
Release |  | (530 | ) |  | (737 | )
As at June 30, |  | 2,073 |  |  | 4,980 |

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