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Financial Instruments (Schedule of Statement of Fair value of Other Financial Assets and Liabilities) (Details) - EUR (€) € in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017 | Dec. 31, 2018
Level 1 [Member] |  |  |
Non-current liabilities: |  |  |
Debentures | € 57,803 | € 60,518 |
Loans from banks and others (including current maturities) |  |  |
Finance lease obligations (including current maturities) |  |  |
Total fair value of other financial liabilities | 57,803 | 60,518 |
Level 2 [Member] |  |  |
Non-current liabilities: |  |  |
Debentures |  |  |
Loans from banks and others (including current maturities) | 66,799 | 45,561 |
Finance lease obligations (including current maturities) |  | 4,209 |
Total fair value of other financial liabilities | 66,799 | 49,770 |
Level 3 [Member] |  |  |
Non-current liabilities: |  |  |
Debentures |  |  |
Loans from banks and others (including current maturities) |  |  |
Finance lease obligations (including current maturities) |  |  |
Total fair value of other financial liabilities |  |  |
Carrying Value [Member] |  |  |
Non-current liabilities: |  |  |
Debentures | 56,355 | 57,631 |
Loans from banks and others (including current maturities) | 68,872 | 44,864 |
Finance lease obligations (including current maturities) |  | 4,020 |
Total fair value of other financial liabilities | € 125,227 | € 106,515 |
Loans from banks and others [Member] |  |  |
Non-current liabilities: |  |  |
Valuation techniques for determining fair value | Future cash flows by the market interest rate on the date of measurement. | Future cash flows by the market interest rate on the date of measurement. |
Inputs used to determine fair value | Discount rate of Euribor+ 2.5%, 3.2% and 3.9% Linkage to Consumer price index in Israel | Discount rate of Euribor+ 2.53% and 4.65% Linkage to Consumer price index in Israel |
Finance lease obligations[Member] |  |  |
Non-current liabilities: |  |  |
Valuation techniques for determining fair value |  | Future cash flows by the market interest rate on the date of measurement. |
Inputs used to determine fair value |  | Discount rate of Euribor+ 2.85% |

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