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v3.19.1

Segment information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenue |  |  |
Trading and manufacturing | $ 13,770 | $ 11,001 | $ 13,721
Engineering | 6,334 | 6,349 | 8,757
Revenue | 20,104 | 17,350 | 22,478
Operating loss |  |  |
Trading and manufacturing | (119) | (153) | (346)
Engineering | (821) | (306) | (209)
Unallocated corporate expenses | (119) | (115) | (115)
Operating expenses | (1,059) | (574) | (670)
Depreciation: |  |  |
Trading and manufacturing | 43 | 41 | 43
Engineering | 17 | 20 | 12
Depreciation | 60 | 61 | 55
Capital Expenditures, Gross |  |  |
Trading and manufacturing | 79 | 13 | 12
Engineering | 6 | 5 | 48
Total | 85 | 18 | $ 60
Assets |  |  |
Trading and manufacturing | 9,951 | 5,049 |
Engineering | 13,114 | 18,688 |
Total assets | 23,065 | 23,737 |
Liabilities |  |  |
Trading and manufacturing | 4,233 | 2,806 |
Engineering | 3,287 | 3,824 |
Total | $ 7,520 | $ 6,630 |

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