Note 3 - Liquidity and Going Concern Analysis (Details Textual) € in Thousands, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
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Mar. 31, 2026
EUR (€)
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Dec. 31, 2025
USD ($)
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Dec. 31, 2025
EUR (€)
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Dec. 31, 2024
EUR (€)
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| Cash and Cash Equivalent | € 206 | € 1,354 | ||
| Retained Earnings (Accumulated Deficit) | (317,413) | (321,428) | ||
| Operating Income (Loss) | $ (7.7) | (7,697) | 56,508 | |
| Cash Provided by (Used in) Operating Activity, Including Discontinued Operation | $ 7.3 | 7,254 | 14,330 | |
| Proceeds from Convertible Debt | € 5,990 | € 7,000 | ||
| Subsequent Event [Member] | ||||
| Gross Proceeds | € 5,000 | |||
| Proceeds from Convertible Debt | 3,000 | |||
| Proceeds from Issuance of Warrants | € 2,000 | |||
| X | ||||||||||
- Definition Gross proceeds raised. No definition available.
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| X | ||||||||||
- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of cash inflow (outflow) from operating activity, including, but not limited to, discontinued operation. Operating activity includes, but is not limited to, transaction, adjustment, and change in value not defined as investing or financing activity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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