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Restricted Cash, Deposits and Marketable Securities (Schedule of Restricted Cash) (Details) € in Thousands, $ in Thousands | Jun. 30, 2022 EUR (€) | Jun. 30, 2022 USD ($) | [2] | Dec. 31, 2021 EUR (€)
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Disclosure of Restricted cash deposits and marketable securities [Abstract] |  |  |  |  |  |
Marketable securities |  | € 1,761 | [1] | $ 1,830 | € 1,946 | [1]
Short-term restricted cash |  | 4,280 | [3] | 4,447 | 1,000 | [3]
Short-term deposits |  | 0 |  | $ 0 | 28,410 |
Long-term restricted non-interest bearing bank deposits | [3] | € 20,379 |  |  | € 15,630 |
[1] | During 2021, the Company invested in a traded Corporate Bond with a coupon rate of 3.255%.
[2] | * Convenience translation into US$ (exchange rate as at June 30, 2022: EUR 1 = US$1.039)
[3] | Deposits used to secure obligations towards the Israeli Electricity Authority for the license for the pumped-storage project in the Manara Cliff in Israel in 2021 and to secure obligations under loan agreements.

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