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Note 5 - Prepaid Expenses and Other (Details Textual) - EUR (€) € in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Prepaid Expense and Other Assets | € 103 | € 778

X
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets. + References No definition available. + Details
Name: | us-gaap_PrepaidExpenseAndOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant