Financial Instruments (Schedule of Fair Values Hierarchy) (Details) € in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 EUR (€)	Dec. 31, 2021 EUR (€)	Dec. 31, 2022 USD ($)
Disclosure of fair value measurement of assets [line items]
Marketable securities	€ 2,836	€ 1,946	$ 3,025
Swap contracts	1,761	(3,996)
Currency swap		3,274
Dori Loan		8,495
Financial power swap	€ (61,537)	€ (20,894)
Marketable securities [Member]
Disclosure of fair value measurement of assets [line items]
Valuation techniques for determining fair value	Market price	Market price
Swap contract [Member]
Disclosure of fair value measurement of assets [line items]
Valuation techniques for determining fair value	Fair value is measured by discounting the future cash flows, over the period of the contract and using market interest rates appropriate for similar instruments, including the adjustment required for the parties’ credit risks.	Fair value is measured by discounting the future cash flows, over the period of the contract and using market interest rates appropriate for similar instruments, including the adjustment required for the parties’ credit risks.
Currency swap [Member]
Disclosure of fair value measurement of assets [line items]
Valuation techniques for determining fair value		Fair value is measured by discounting the future cash flows, over the period of the contract and using market interest rates appropriate for similar instruments, including the adjustment required for the parties’ credit risks.
Dori loan [Member]
Disclosure of fair value measurement of assets [line items]
Valuation techniques for determining fair value		The fair value is measured by discounting the expected future loan repayments and using market interest rates appropriate for similar instruments, including the adjustment required for the parties’ credit risks. The discounting rate was estimated at approximately 10% and the expected yearly change of Israeli Consumer Price Index, during the expected lifetime of the loan, was estimated at approximately 1%.
Financial power swap [Member]
Disclosure of fair value measurement of assets [line items]
Valuation techniques for determining fair value	Fair value is measured by discounting the future fixed and assessed cash flows, over the period of the contract and using market interest rates appropriate for similar instruments. The value is adjusted for the parties’ credit risks.	Fair value is measured by discounting the future fixed and assessed cash flows, over the period of the contract and using market interest rates appropriate for similar instruments. The value is adjusted for the parties’ credit risks.
Level 1 [Member]
Disclosure of fair value measurement of assets [line items]
Marketable securities	€ 2,836	€ 1,946
Swap contracts	0	0
Currency swap		0
Dori Loan		0
Financial power swap	0	0
Level 2 [Member]
Disclosure of fair value measurement of assets [line items]
Marketable securities	0	0
Swap contracts	1,761	(3,996)
Currency swap		3,274
Dori Loan		0
Financial power swap	0	0
Level 3 [Member]
Disclosure of fair value measurement of assets [line items]
Marketable securities	0	0
Swap contracts	0	0
Currency swap		0
Dori Loan		8,495
Financial power swap	€ (61,537)	€ (20,894)