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Investee Companies and other investments (Schedule of Aggregate Cash Flows Derived) (Details) - EUR (€) € in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 18, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | [1] | Dec. 31, 2015 | [1]
Disclosure of associates [abstract] |  |  |  |
Cash and cash equivalents paid | € 11,815 |  |  |
Less - cash and cash equivalents of the subsidiary | (1,964) |  |  |
Total cash and cash equivalents | € 9,851 | € 9,851 |  |
[1] | Please refer to note 2C for functional and presentation currency.

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