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Financial Instruments (Schedule of Fair Values Hierarchy) (Details) - EUR (€) € in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Disclosure of fair value measurement of assets [line items]
Marketable securities		€ 2,836
Swap contracts	€ 1,587	1,761
Financial power swap	€ (8,872)	€ (61,537)
Marketable securities [Member]
Disclosure of fair value measurement of assets [line items]
Valuation techniques for determining fair value		Market price
Swap contracts [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.
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
Swap contracts	€ 0	0
Financial power swap	0	0
Level 2 [Member]
Disclosure of fair value measurement of assets [line items]
Marketable securities		0
Swap contracts	1,587	1,761
Financial power swap	0	0
Level 3 [Member]
Disclosure of fair value measurement of assets [line items]
Marketable securities		0
Swap contracts	0	0
Financial power swap	€ (8,872)	€ (61,537)

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- Definition

Financial power swap.

+ References

No definition available.

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- Definition

Swap contracts.

+ References

No definition available.

+ Details

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X

- Definition

The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
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-URIDate 2022-03-24

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- Definition

The description of the valuation techniques (for example, the market approach, cost approach and income approach) used for the fair value measurement of liabilities. [Refer: Valuation techniques [member]; Cost approach [member]; Income approach [member]; Market approach [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2022-03-24
-Paragraph 93
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_d&doctype=Standard
-URIDate 2022-03-24

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

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