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