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Taxation - Other (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Taxation |  |  |
Income tax expense | $ (249,000) | $ (157,000) | $ (43,000)
Tax loss carryforwards | 5,900,000 | $ 5,747,000 | $ 5,218,000
NL |  |  |
Taxation |  |  |
Income tax expense | $ 0 |  |

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- Definition The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2022-03-24 -Paragraph 35 -Subparagraph b -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2022-en-r&anchor=para_35_b_viii&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2022-03-24 -Paragraph 23 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2022-en-r&anchor=para_23_h&doctype=Standard -URIDate 2022-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 79 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_79&doctype=Standard -URIDate 2022-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 81 -Subparagraph c -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_c_i&doctype=Standard -URIDate 2022-03-24 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 81 -Subparagraph c -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_c_ii&doctype=Standard -URIDate 2022-03-24 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2022-03-24 -Paragraph B13 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2022-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B -URIDate 2022-03-24 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 82 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_82_d&doctype=Standard -URIDate 2022-03-24 + Details
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