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Investee Companies and other investments (Summary of Information on Operating Results) (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | [1]
Disclosure of associates [line items] |  |  |  |
Income for the year | € 13,636 | € 11,632 | [1] | € 12,446
Elimination of interest on loan from related party | 1,158 | 1,244 |  |
Company's share of income of investee | € 1,531 | € 1,375 | [1] | € 2,202
Dori Energy [Member] |  |  |  |
Disclosure of associates [line items] |  |  |  |
Rate of ownership as of December 31, 2017 | 50.00% | 50.00% |  |
Income for the year | € 1,751 | € 490 |  |
Company's share | 876 | 245 |  |
Elimination of interest on loan from related party | 1,158 | 1,244 |  |
Other Adjustments | (503) | (114) |  |
Company's share of income of investee | € 1,531 | € 1,375 |  |
[1] | Please refer to note 2C for functional and presentation currency.

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