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Disaggregated revenue from contracts (Tables) | 12 Months Ended
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Dec. 31, 2020
Disaggregation of Revenue [Abstract] |
Disaggregated revenue from contracts |
|  | Year ended December 31,
|  | 2020 |  | 2019 |  | 2018
|  |  | US$’000 |  |  |  | US$’000 |  |  |  | US$’000 |
Revenue |  |  |  |  |  |  |  |  |  |  |  |
Trading and manufacturing (revenue recognized at point in time) |  |  | 9,476 |  |  |  | 11,877 |  |  |  | 13,770 |
Engineering (revenue recognized over time) |  |  | 3,881 |  |  |  | 5,522 |  |  |  | 6,334 |
|  |  | 13,357 |  |  |  | 17,399 |  |  |  | 20,104 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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