Note 1 - Business Description and Significant Accounting Policies (Details Textual) - USD ($) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Mar. 31, 2025 |
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| Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation | $ 2,130,000 | $ 2,258,000 | $ 4,316,000 |
| Certificates of Deposit, at Carrying Value | 500,000 | 500,000 | $ 500,000 |
| Prefunded Warrants [Member] | |||
| Class of Warrant or Right, Issuance Costs | $ 335,000 | ||
| Warrants and Rights Outstanding, Term (Year) | 12 years | ||
| Stock-based Advisory Fees | $ 84,000 | $ 168,000 | |
| Class of Warrant or Right, Remaining Issuance Costs | $ 83,000 | ||
| G P Communications [Member] | |||
| Subsidiary, Ownership Percentage, Parent | 100.00% |
| X | ||||||||||
- Definition Amount of costs for the issuance of warrants or rights. No definition available.
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- Definition Amount of remaining costs to be paid for the issuance of warrants or rights. No definition available.
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- Definition A fee charged for stock-based advisory services. No definition available.
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- Definition Amount of cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; attributable to continuing operation. 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 A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. No definition available.
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- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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