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Disclosure on individual items of the consolidated financial statements (Details) - Schedule of cost of goods sold - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Schedule Of Cost Of Goods Sold Abstract      
Cost of materials € 23,554 € 26,433 € 38,100
Personnel expenses 3,388 3,097 2,819
Depreciation and amortization 3,517 3,103 1,515
Other expenses 445 2,677 3,114
Total € 30,904 € 35,310 € 45,548