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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 Swap contracts. + References No definition available. + Details
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- 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 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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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 -Number 13 -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 + Details
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