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Investee Companies and other investments (Summary of Information on Operating Results) (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of associates [line items] |  |  |
Income for the year | € 9,645 | € 18,988 | € 18,117
Elimination of interest on loan from related party | 676 | 868 |
Company's share of income of investee | € 1,525 | € 3,086 | € 2,545
Dori Energy [Member] |  |  |
Disclosure of associates [line items] |  |  |
Rate of ownership as of December 31 | 50.00% | 50.00% |
Income for the year | € 2,619 | € 5,281 |
Company's share | 1,310 | 2,640 |
Elimination of interest on loan from related party | 676 | 868 |
Other Adjustments | (461) | (422) |
Company's share of income of investee | € 1,525 | € 3,086 |

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