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Property, plant and equipment - Right-of-Use Assets Rollforward (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | $ 12,206 |
Ending, Right-of-use assets | 12,017 | $ 12,206
Property |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 11,837 |
Ending, Right-of-use assets | 11,487 | 11,837
Equipment |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 139 |
Ending, Right-of-use assets | 116 | 139
Vehicle |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 230 |
Ending, Right-of-use assets | 414 | 230
Cost |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 26,974 | 25,022
Additions | 3,049 | 2,013
De-recognition | (25) |
Additions through acquisition |  | 174
Transfer | (341) | (159)
Effect of movements in exchange rates | 12 | (76)
Ending, Right-of-use assets | 29,669 | 26,974
Cost | Property |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 26,427 | 24,665
Additions | 2,746 | 1,967
De-recognition | 0 |
Additions through acquisition |  | 0
Transfer | (341) | (137)
Effect of movements in exchange rates | 12 | (68)
Ending, Right-of-use assets | 28,844 | 26,427
Cost | Equipment |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 175 | 149
Additions | 13 | 46
De-recognition | 0 |
Additions through acquisition |  | 0
Transfer | 0 | (22)
Effect of movements in exchange rates | 0 | 2
Ending, Right-of-use assets | 188 | 175
Cost | Vehicle |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | 372 | 208
Additions | 290 | 0
De-recognition | (25) |
Additions through acquisition |  | 174
Transfer | 0 | 0
Effect of movements in exchange rates | 0 | (10)
Ending, Right-of-use assets | 637 | 372
Accumulated depreciation |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | (14,768) | (12,248)
De-recognition | (6) |
Transfer | (341) | (159)
Depreciation | 3,231 | 2,715
Effect of movements in exchange rates | 0 | (36)
Ending, Right-of-use assets | (17,652) | (14,768)
Accumulated depreciation | Property |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | (14,590) | (12,128)
De-recognition | 0 |
Transfer | (341) | (137)
Depreciation | 3,108 | 2,633
Effect of movements in exchange rates | 0 | (34)
Ending, Right-of-use assets | (17,357) | (14,590)
Accumulated depreciation | Equipment |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | (36) | (28)
De-recognition | 0 |
Transfer | 0 | (22)
Depreciation | 36 | 28
Effect of movements in exchange rates | 0 | 2
Ending, Right-of-use assets | (72) | (36)
Accumulated depreciation | Vehicle |  |
Right-of-Use Assets [Roll Forward] |  |
Beginning, Right-of-use assets | (142) | (92)
De-recognition | (6) |
Transfer | 0 | 0
Depreciation | 87 | 54
Effect of movements in exchange rates | 0 | (4)
Ending, Right-of-use assets | $ (223) | $ (142)

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- Definition Additions through business combinations, right of use assets + References No definition available. + Details
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- Definition De-Recognition of Right-of-Use Assets + References No definition available. + Details
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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 53 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_53_h&doctype=Standard -URIDate 2022-03-24 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2022-03-24 -Paragraph 53 -Subparagraph j -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_53_j&doctype=Standard -URIDate 2022-03-24 + Details
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