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Note 5 - Other Operating Income and Expenses (Tables) | 12 Months Ended
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Dec. 31, 2018
Statement Line Items [Line Items] |
Disclosure of detailed information about other operating income and expenses [text block] |
|  | Year ended December 31, |
(all amounts in thousands of U.S. dollars) |  | 2018 |  |  | 2017 |  |  | 2016 |
Other operating income |  |  |  |  |  |  |  |  |  |  |  |
Net income from other sales |  |  | 3,604 |  |  |  | 4,395 |  |  |  | 16,275 |
Net rents |  |  | 4,909 |  |  |  | 4,325 |  |  |  | 4,852 |
Other |  |  | 6,546 |  |  |  | 1,796 |  |  |  | - |
|  |  | 15,059 |  |  |  | 10,516 |  |  |  | 21,127 |
Other operating expenses |  |  |  |  |  |  |  |  |  |  |  |
Contributions to welfare projects and non-profits organizations |  |  | 11,379 |  |  |  | 9,158 |  |  |  | 9,534 |
Loss on fixed assets and material supplies disposed / scrapped |  |  | - |  |  |  | 118 |  |  |  | 57 |
Allowance for doubtful receivables |  |  | 1,179 |  |  |  | 84 |  |  |  | 432 |
Other |  |  | - |  |  |  | - |  |  |  | 1,388 |
|  |  | 12,558 |  |  |  | 9,360 |  |  |  | 11,411 |
From discontinued operations |  |  | - |  |  |  | (1 | ) |  |  | (248 | )
|  |  | 12,558 |  |  |  | 9,359 |  |  |  | 11,163 |

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