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Investee Companies and other investments (Summary of Information on Financial Position) (Details) - EUR (€) € in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of associates [line items] |  |  |  |
Current Assets | € 83,122 | € 55,526 |  |
Non-current assets | 227,050 | 155,634 |  |
Total assets | 310,172 | 211,160 | € 198,087 |
Current liabilities | (37,686) | (19,851) |  |
Non-current liabilities | (164,920) | (114,352) |  |
Total liabilities | (202,606) | (134,203) |  |
Equity attributable to the owners of the Company | 106,629 | 78,515 |  |
Company's share | (107,566) | (76,957) | € (77,500) | € (84,371)
Carrying Amount of investment | € 23,580 | € 19,641 |  |
Dori Energy [Member] |  |  |  |
Disclosure of associates [line items] |  |  |  |
Proportion of ownership interest | 50.00% | 50.00% |  |
Current Assets | € 44 | € 1,154 |  |
Non-current assets | 62,484 | 49,629 |  |
Total assets | 62,506 | 50,783 |  |
Current liabilities | (215) | (204) |  |
Non-current liabilities | (20,852) | (18,005) |  |
Total liabilities | (21,067) | (18,209) |  |
Equity attributable to the owners of the Company | 41,483 | 32,574 |  |
Company's share | 20,742 | 16,287 |  |
Surplus Costs and goodwill | 3,269 | 3,376 |  |
Other Adjustments | (431) | (22) |  |
Carrying Amount of investment | € 23,580 | € 19,641 |  |

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