Note 3 - Liquidity and Going Concern Analysis (Details Textual) - USD ($) |
1 Months Ended | 3 Months Ended | 15 Months Ended | |||
|---|---|---|---|---|---|---|
Apr. 28, 2026 |
Mar. 31, 2026 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Cash and Cash Equivalent | $ 237,000 | $ 237,000 | $ 237,000 | $ 243,000 | ||
| Retained Earnings (Accumulated Deficit) | (335,405,000) | (335,405,000) | (335,405,000) | $ (333,390,000) | ||
| Crypto Asset, Fair Value, Current | 4,709,000 | 4,709,000 | 4,709,000 | |||
| Debt Instrument, Face Amount | 4,350,000 | 4,350,000 | 4,350,000 | |||
| Convertible Debt | 1,129,000 | 1,129,000 | 1,129,000 | |||
| Operating Income (Loss) | (1,480,000) | $ (1,018,000) | ||||
| Net Income (Loss) Attributable to Parent | (2,015,000) | 7,802,000 | 7,802,000 | |||
| Proceeds from Convertible Debt | 4,350,000 | 2,000,000 | ||||
| Proceeds from Issuance of Warrants | 2,000,000 | 2,000,000 | $ 0 | |||
| Q1 2026 Debentures [Member] | ||||||
| Debt Instrument, Face Amount | 4,350,000 | 4,350,000 | 4,350,000 | |||
| Proceeds from Convertible Debt | 6,400,000 | |||||
| April 2026 Debenture [Member] | Subsequent Event [Member] | ||||||
| Debt Instrument, Face Amount | $ 700,000 | |||||
| Proceeds from Convertible Debt | $ 700,000 | |||||
| Embedded Conversion Features [Member] | ||||||
| Derivative Liability, Current | $ 3,708,000 | $ 3,708,000 | $ 3,708,000 | |||
| 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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- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value of crypto asset classified as current. Excludes crypto asset held for platform user. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- 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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- 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://www.xbrl.org/2003/role/disclosureRef
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