Note 5 - Accrued Expenses and Other Current Liabilities (Details Textual) - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accrued Liabilities and Other Liabilities, Current | $ 973,000 | $ 1,061,000 |
| Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | ||
| Accrued Liabilities and Other Liabilities, Current | 777,000 | 760,000 |
| Digital Assets [Member] | Operating Segments [Member] | ||
| Accrued Liabilities and Other Liabilities, Current | 19,000 | 21,000 |
| Managed Services [Member] | Operating Segments [Member] | ||
| Accrued Liabilities and Other Liabilities, Current | 7,000 | 11,000 |
| Collaboration Products [Member] | Operating Segments [Member] | ||
| Accrued Liabilities and Other Liabilities, Current | $ 170,000 | $ 269,000 |