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Leases (Schedule of Right-of-use Assets) (Details) € in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 EUR (€) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 EUR (€) | Dec. 31, 2019 EUR (€)
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | € 17,209 |  | € 15,401 |
Depreciation for the year | 774 |  | 320 | € 321
Balance at December 31 | 23,367 | $ 26,447 | 17,209 | 15,401
Gelderland [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 355 |  | 0 |
Balance at December 31 | 170 |  | 355 | 0
Spain [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 2,874 |  | 1,160 |
Balance at December 31 | 2,755 |  | 2,874 | 1,160
Talasol [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 12,517 |  | 12,656 |
Balance at December 31 | 7,587 |  | 12,517 | 12,656
Talmei Yosef [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 1,463 |  | 1,585 |
Balance at December 31 | 1,503 |  | 1,463 | 1,585
Pumped Storage [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 0 |  | 0 |
Balance at December 31 | 11,352 |  | 0 | € 0
Cost [member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 17,737 |  |  |
lease agreements entered into during the period | 10,629 |  |  |
Other | (4,496) |  |  |
Effect of changes in exchange rates | 1,056 |  |  |
Balance at December 31 | 24,926 |  | 17,737 |
Cost [member] | Gelderland [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 355 |  |  |
lease agreements entered into during the period | 0 |  |  |
Other | 0 |  |  |
Effect of changes in exchange rates | 0 |  |  |
Balance at December 31 | 355 |  | 355 |
Cost [member] | Spain [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 3,024 |  |  |
lease agreements entered into during the period | 0 |  |  |
Other | 0 |  |  |
Effect of changes in exchange rates | 0 |  |  |
Balance at December 31 | 3,024 |  | 3,024 |
Cost [member] | Talasol [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 12,686 |  |  |
lease agreements entered into during the period | 0 |  |  |
Other | (4,526) |  |  |
Effect of changes in exchange rates | 0 |  |  |
Balance at December 31 | 8,160 |  | 12,686 |
Cost [member] | Talmei Yosef [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 1,672 |  |  |
lease agreements entered into during the period | 0 |  |  |
Other | (18) |  |  |
Effect of changes in exchange rates | 168 |  |  |
Balance at December 31 | 1,822 |  | 1,672 |
Cost [member] | Pumped Storage [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 0 |  |  |
lease agreements entered into during the period | 10,629 |  |  |
Other | (48) |  |  |
Effect of changes in exchange rates | 888 |  |  |
Balance at December 31 | 11,565 |  | 0 |
Depreciation [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | (528) |  |  |
Depreciation for the year | 1,031 |  |  |
Balance at December 31 | (1,559) |  | (528) |
Depreciation [Member] | Gelderland [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 0 |  |  |
Depreciation for the year | 185 |  |  |
Balance at December 31 | (185) |  | 0 |
Depreciation [Member] | Spain [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | (150) |  |  |
Depreciation for the year | 119 |  |  |
Balance at December 31 | (269) |  | (150) |
Depreciation [Member] | Talasol [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | (169) |  |  |
Depreciation for the year | 404 |  |  |
Balance at December 31 | (573) |  | (169) |
Depreciation [Member] | Talmei Yosef [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | (209) |  |  |
Depreciation for the year | 110 |  |  |
Balance at December 31 | (319) |  | (209) |
Depreciation [Member] | Pumped Storage [Member] |  |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |  |
Balance at January 1 | 0 |  |  |
Depreciation for the year | 213 |  |  |
Balance at December 31 | € (213) |  | € 0 |

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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_53_j&doctype=Standard -URIDate 2021-03-24 + Details
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