Note 2 - Basis of Presentation and Recent Accounting Pronouncements (Details Textual) - USD ($) |
9 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Cash Provided by (Used in) Operating Activity, Including Discontinued Operation | $ (652,000) | $ (1,439,000) |
| Cash Provided by (Used in) Investing Activity, Including Discontinued Operation | $ 2,464,000 | 3,898,000 |
| Revision of Prior Period, Reclassification, Adjustment [Member] | ||
| Cash Provided by (Used in) Operating Activity, Including Discontinued Operation | (94) | |
| Cash Provided by (Used in) Investing Activity, Including Discontinued Operation | $ 94 | |