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v3.20.1

Segment information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenue | $ 17,399 | $ 20,104 | $ 17,350
Operating loss | (440) | (1,059) | (574)
Depreciation | 69 | 60 | 61
Capital expenditures, gross | 21 | 85 | 18
Assets | 22,213 | 23,065 |
Liabilities | 6,876 | 7,520 |
Trading and manufacturing |  |  |
Revenue | 11,877 | 13,770 | 11,001
Operating loss | (102) | (119) | (153)
Depreciation | 54 | 43 | 41
Capital expenditures, gross | 17 | 79 | 13
Assets | 9,843 | 9,951 |
Liabilities | 4,319 | 4,233 |
Engineering |  |  |
Revenue | 5,522 | 6,334 | 6,349
Operating loss | (158) | (821) | (306)
Depreciation | 15 | 17 | 20
Capital expenditures, gross | 4 | 6 | 5
Assets | 12,370 | 13,114 |
Liabilities | 2,557 | 3,287 |
Unallocated corporate expenses |  |  |
Operating loss | $ (180) | $ (119) | $ (115)

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