Note 4 - Prepaid Expenses and Other Current Assets (Details Textual) - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Prepaid Expense and Other Assets, Current | $ 500,000 | $ 424,000 |
| Operating Segments [Member] | Digital Assets [Member] | ||
| Prepaid Expense and Other Assets, Current | 83,000 | 168,000 |
| Operating Segments [Member] | Managed Services [Member] | ||
| Prepaid Expense and Other Assets, Current | 15,000 | 15,000 |
| Operating Segments [Member] | Collaboration Products [Member] | ||
| Prepaid Expense and Other Assets, Current | 6,000 | 7,000 |
| Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | ||
| Prepaid Expense and Other Assets, Current | $ 396,000 | $ 234,000 |