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Operating Segments (Schedule of Revenues from Company's Operation in Italy and Spain) (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of geographical areas [line items]      
Revenue € 18,988 € 18,117 € 13,636
Israel [Member]      
Disclosure of geographical areas [line items]      
Revenue 1,133 1,041 183
Netherland [Member]      
Disclosure of geographical areas [line items]      
Revenue 4,786 4,483 303
Italy [Member]      
Disclosure of geographical areas [line items]      
Revenue 10,082 9,560 10,143
Spain [Member]      
Disclosure of geographical areas [line items]      
Revenue € 2,987 € 3,033 € 3,007