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Leases (Schedule of Right-of-use Assets) (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | € 15,401 |  |
Depreciation for the year | 320 | € 321 |
Balance at December 31 | 17,209 | 15,401 |
Gelderland [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 |  |  |
Balance at December 31 | 355 |  |
Spain [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 1,160 |  |
Balance at December 31 | 2,874 | 1,160 |
Talasol [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 12,656 |  |
Balance at December 31 | 12,517 | 12,656 |
Talmei Yosef [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 1,585 |  |
Balance at December 31 | 1,463 | 1,585 |
Depreciation [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 208 |  |
Depreciation for the year | 320 |  |
New companies |  |  |
Disposals |  |  |
Balance at December 31 | 528 | 208 |
Depreciation [Member] | Gelderland [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 |  |  |
Depreciation for the year |  |  |
New companies |  |  |
Disposals |  |  |
Balance at December 31 |  |  |
Depreciation [Member] | Spain [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 75 |  |
Depreciation for the year | 75 |  |
New companies |  |  |
Disposals |  |  |
Balance at December 31 | 150 | 75 |
Depreciation [Member] | Talasol [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 30 |  |
Depreciation for the year | 139 |  |
New companies |  |  |
Disposals |  |  |
Balance at December 31 | 169 | 30 |
Depreciation [Member] | Talmei Yosef [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 103 |  |
Depreciation for the year | 106 |  |
New companies |  |  |
Disposals |  |  |
Balance at December 31 | 209 | 103 |
Gross carrying amount [member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 15,609 |  |
Additions | 1,799 |  |
New companies | 355 |  |
Disposals |  |  |
Effect of changes in exchange rates | (26) |  |
Balance at December 31 | 17,737 | 15,609 |
Gross carrying amount [member] | Gelderland [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 |  |  |
Additions |  |  |
New companies | 355 |  |
Disposals |  |  |
Effect of changes in exchange rates |  |  |
Balance at December 31 | 355 |  |
Gross carrying amount [member] | Spain [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 1,235 |  |
Additions | 1,789 |  |
New companies |  |  |
Disposals |  |  |
Effect of changes in exchange rates |  |  |
Balance at December 31 | 3,024 | 1,235 |
Gross carrying amount [member] | Talasol [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 12,686 |  |
Additions |  |  |
New companies |  |  |
Disposals |  |  |
Effect of changes in exchange rates |  |  |
Balance at December 31 | 12,686 | 12,686 |
Gross carrying amount [member] | Talmei Yosef [Member] |  |  |
Disclosure of quantitative information about right-of-use assets [line items] |  |  |
Balance at January 1 | 1,688 |  |
Additions | 10 |  |
New companies |  |  |
Disposals |  |  |
Effect of changes in exchange rates | (26) |  |
Balance at December 31 | € 1,672 | € 1,688 |

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