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Investee Companies and other investments (Schedule of Changes in Investments) (Details) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Changes In Equity And Loans [Abstract] |  |  |
Balance as at January 1 | € 32,234 | € 33,561 |
Long term loans extended | 335 | 181 |
Repayment of long term loans | (2,259) | (2,560) |
Interest and reevaluation in connection with long term loans | 799 | 758 |
Deferred Interests | 57 | 56 |
Elimination of interest on loan from related party | (878) | (676) |
Company's share of income of investee | 117 | 1,525 | € 3,086
Foreign currency translation adjustments | (3,624) | 611 |
Balance as at December 31 | € 34,029 | € 32,234 | € 33,561

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