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Other operating expense (Tables) | 12 Months Ended
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Dec. 31, 2018
Analysis of income and expense [abstract] |
Disclosure of detailed information on other operating expense |
| December 31, 2018 |  |  | December 31, 2017 |
Net impairment loss on trade receivables | $ | 98 |  |  | $ | 103 |
Restructuring expense | 507 |  |  | 799 |
| $ | 605 |  |  | $ | 902 |

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- Definition Disclosure Of Detailed Information, Other Operating Expenses [Table Text Block] + References No definition available. + Details
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