v3.25.1
Segment information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment information      
Assets $ 20,708 $ 22,120  
Liabilities 4,014 5,640  
Revenue 15,383 17,940 $ 14,949
Operating income / (loss) 386 (249) 114
Depreciation 14 15 33
Capital expenditures, gross 5 5 7
Trading and Manufacturing      
Segment information      
Assets 6,668 8,229  
Liabilities 2,155 3,605  
Revenue 9,549 12,143 9,332
Operating income / (loss) 278 377 (246)
Depreciation 11 11 28
Capital expenditures, gross 3 3 2
Engineering      
Segment information      
Assets 14,040 13,891  
Liabilities 1,859 2,035  
Revenue 5,834 5,797 5,617
Operating income / (loss) 273 (438) 590
Depreciation 3 4 5
Capital expenditures, gross 2 2 5
Unallocated Corporate Expenses      
Operating income / (loss) $ (165) $ (188) $ (230)