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Other operating expense (Tables) | 12 Months Ended
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Dec. 31, 2021
Analysis of income and expense [abstract] |
Disclosure of detailed information on other operating expense |
| December 31, 2021 |  | December 31, 2020
Net impairment loss on trade receivables | $ | 54 |  |  | $ | 60 |
Impairment loss allowance | — |  |  | 250 |
Total impairment loss on trade receivables | 54 |  |  | 310 |
Restructuring costs | 156 |  |  | 66 |
Acquisition related costs (note 7) | 2,115 |  |  | — |
| $ | 2,325 |  |  | $ | 376 |

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