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Financial Instruments (Schedule of Sensitivity Analysis of Equity) (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
5% in Euro Increase Equity [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Change in exchange rate of Increase (Decrease) of Equity | € 761 | € 981
5% in Euro Decrease Equity [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Change in exchange rate of Increase (Decrease) of Equity | (761) | (981)
5% in NIS Increase Equity [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Change in exchange rate of Increase (Decrease) of Equity | (378) | (256)
5% in NIS Decrease Equity [Member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Change in exchange rate of Increase (Decrease) of Equity | € 378 | € 256

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