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Details of the Statements of Profit or Loss and Other Comprehensive Income (General and Administrative Expenses) (Details) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of Details of Statements of Profit or Loss and Other Comprehensive Income Loss [Abstract] |  |  |
Salaries and related compensation | € 1,442 | € 1,324 | € 1,016
Professional services | 2,057 | 1,978 | 2,185
Other | 1,013 | 525 | 399
Total general and administrative expenses | € 4,512 | € 3,827 | € 3,600

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