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Others - Capital management , schedule of gearing ratios (Details) $ in Thousands | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
--- | --- | --- | --- | ---
Others |  |  |  |
Total liabilities | $ 30,957 | $ 28,309 |  |
Total equity | $ 139,406 | $ 181,964 | $ (190,442) | $ (35,743)
Gearing ratio | 0.22 | 0.16 |  |

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